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// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
// SPDX-License-Identifier: BSD-3-Clause

declare(strict_types=1);

namespace SimplePie;

use InvalidArgumentException;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;
use Psr\Http\Message\UriFactoryInterface;
use Psr\SimpleCache\CacheInterface;
use SimplePie\Cache\Base;
use SimplePie\Cache\BaseDataCache;
use SimplePie\Cache\CallableNameFilter;
use SimplePie\Cache\DataCache;
use SimplePie\Cache\NameFilter;
use SimplePie\Cache\Psr16;
use SimplePie\Content\Type\Sniffer;
use SimplePie\Exception as SimplePieException;
use SimplePie\HTTP\Client;
use SimplePie\HTTP\ClientException;
use SimplePie\HTTP\FileClient;
use SimplePie\HTTP\Psr18Client;
use SimplePie\HTTP\Response;

/**
 * SimplePie
 */
class SimplePie
{
    /**
     * SimplePie Name
     */
    public const NAME = &#039;SimplePie&#039;;

    /**
     * SimplePie Version
     */
    public const VERSION = &#039;1.9.0&#039;;

    /**
     * SimplePie Website URL
     */
    public const URL = &#039;http://simplepie.org&#039;;

    /**
     * SimplePie Linkback
     */
    public const LINKBACK = &#039;&lt;a href=&quot;&#039; . self::URL . &#039;&quot; title=&quot;&#039; . self::NAME . &#039; &#039; . self::VERSION . &#039;&quot;&gt;&#039; . self::NAME . &#039;&lt;/a&gt;&#039;;

    /**
     * No Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_NONE = 0;

    /**
     * Feed Link Element Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_AUTODISCOVERY = 1;

    /**
     * Local Feed Extension Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_LOCAL_EXTENSION = 2;

    /**
     * Local Feed Body Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_LOCAL_BODY = 4;

    /**
     * Remote Feed Extension Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_REMOTE_EXTENSION = 8;

    /**
     * Remote Feed Body Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_REMOTE_BODY = 16;

    /**
     * All Feed Autodiscovery
     * @see SimplePie::set_autodiscovery_level()
     */
    public const LOCATOR_ALL = 31;

    /**
     * No known feed type
     */
    public const TYPE_NONE = 0;

    /**
     * RSS 0.90
     */
    public const TYPE_RSS_090 = 1;

    /**
     * RSS 0.91 (Netscape)
     */
    public const TYPE_RSS_091_NETSCAPE = 2;

    /**
     * RSS 0.91 (Userland)
     */
    public const TYPE_RSS_091_USERLAND = 4;

    /**
     * RSS 0.91 (both Netscape and Userland)
     */
    public const TYPE_RSS_091 = 6;

    /**
     * RSS 0.92
     */
    public const TYPE_RSS_092 = 8;

    /**
     * RSS 0.93
     */
    public const TYPE_RSS_093 = 16;

    /**
     * RSS 0.94
     */
    public const TYPE_RSS_094 = 32;

    /**
     * RSS 1.0
     */
    public const TYPE_RSS_10 = 64;

    /**
     * RSS 2.0
     */
    public const TYPE_RSS_20 = 128;

    /**
     * RDF-based RSS
     */
    public const TYPE_RSS_RDF = 65;

    /**
     * Non-RDF-based RSS (truly intended as syndication format)
     */
    public const TYPE_RSS_SYNDICATION = 190;

    /**
     * All RSS
     */
    public const TYPE_RSS_ALL = 255;

    /**
     * Atom 0.3
     */
    public const TYPE_ATOM_03 = 256;

    /**
     * Atom 1.0
     */
    public const TYPE_ATOM_10 = 512;

    /**
     * All Atom
     */
    public const TYPE_ATOM_ALL = 768;

    /**
     * All feed types
     */
    public const TYPE_ALL = 1023;

    /**
     * No construct
     */
    public const CONSTRUCT_NONE = 0;

    /**
     * Text construct
     */
    public const CONSTRUCT_TEXT = 1;

    /**
     * HTML construct
     */
    public const CONSTRUCT_HTML = 2;

    /**
     * XHTML construct
     */
    public const CONSTRUCT_XHTML = 4;

    /**
     * base64-encoded construct
     */
    public const CONSTRUCT_BASE64 = 8;

    /**
     * IRI construct
     */
    public const CONSTRUCT_IRI = 16;

    /**
     * A construct that might be HTML
     */
    public const CONSTRUCT_MAYBE_HTML = 32;

    /**
     * All constructs
     */
    public const CONSTRUCT_ALL = 63;

    /**
     * Don&#039;t change case
     */
    public const SAME_CASE = 1;

    /**
     * Change to lowercase
     */
    public const LOWERCASE = 2;

    /**
     * Change to uppercase
     */
    public const UPPERCASE = 4;

    /**
     * PCRE for HTML attributes
     */
    public const PCRE_HTML_ATTRIBUTE = &#039;((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:&quot;(?:[^&quot;]*)&quot;|\&#039;(?:[^\&#039;]*)\&#039;|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*&#039;;

    /**
     * PCRE for XML attributes
     */
    public const PCRE_XML_ATTRIBUTE = &#039;((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:&quot;(?:[^&quot;]*)&quot;|\&#039;(?:[^\&#039;]*)\&#039;))*)\s*&#039;;

    /**
     * XML Namespace
     */
    public const NAMESPACE_XML = &#039;http://www.w3.org/XML/1998/namespace&#039;;

    /**
     * Atom 1.0 Namespace
     */
    public const NAMESPACE_ATOM_10 = &#039;http://www.w3.org/2005/Atom&#039;;

    /**
     * Atom 0.3 Namespace
     */
    public const NAMESPACE_ATOM_03 = &#039;http://purl.org/atom/ns#&#039;;

    /**
     * RDF Namespace
     */
    public const NAMESPACE_RDF = &#039;http://www.w3.org/1999/02/22-rdf-syntax-ns#&#039;;

    /**
     * RSS 0.90 Namespace
     */
    public const NAMESPACE_RSS_090 = &#039;http://my.netscape.com/rdf/simple/0.9/&#039;;

    /**
     * RSS 1.0 Namespace
     */
    public const NAMESPACE_RSS_10 = &#039;http://purl.org/rss/1.0/&#039;;

    /**
     * RSS 1.0 Content Module Namespace
     */
    public const NAMESPACE_RSS_10_MODULES_CONTENT = &#039;http://purl.org/rss/1.0/modules/content/&#039;;

    /**
     * RSS 2.0 Namespace
     * (Stupid, I know, but I&#039;m certain it will confuse people less with support.)
     */
    public const NAMESPACE_RSS_20 = &#039;&#039;;

    /**
     * DC 1.0 Namespace
     */
    public const NAMESPACE_DC_10 = &#039;http://purl.org/dc/elements/1.0/&#039;;

    /**
     * DC 1.1 Namespace
     */
    public const NAMESPACE_DC_11 = &#039;http://purl.org/dc/elements/1.1/&#039;;

    /**
     * W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
     */
    public const NAMESPACE_W3C_BASIC_GEO = &#039;http://www.w3.org/2003/01/geo/wgs84_pos#&#039;;

    /**
     * GeoRSS Namespace
     */
    public const NAMESPACE_GEORSS = &#039;http://www.georss.org/georss&#039;;

    /**
     * Media RSS Namespace
     */
    public const NAMESPACE_MEDIARSS = &#039;http://search.yahoo.com/mrss/&#039;;

    /**
     * Wrong Media RSS Namespace. Caused by a long-standing typo in the spec.
     */
    public const NAMESPACE_MEDIARSS_WRONG = &#039;http://search.yahoo.com/mrss&#039;;

    /**
     * Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5.
     */
    public const NAMESPACE_MEDIARSS_WRONG2 = &#039;http://video.search.yahoo.com/mrss&#039;;

    /**
     * Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace.
     */
    public const NAMESPACE_MEDIARSS_WRONG3 = &#039;http://video.search.yahoo.com/mrss/&#039;;

    /**
     * Wrong Media RSS Namespace #4. New spec location after the RSS Advisory Board takes it over, but not a valid namespace.
     */
    public const NAMESPACE_MEDIARSS_WRONG4 = &#039;http://www.rssboard.org/media-rss&#039;;

    /**
     * Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL.
     */
    public const NAMESPACE_MEDIARSS_WRONG5 = &#039;http://www.rssboard.org/media-rss/&#039;;

    /**
     * iTunes RSS Namespace
     */
    public const NAMESPACE_ITUNES = &#039;http://www.itunes.com/dtds/podcast-1.0.dtd&#039;;

    /**
     * XHTML Namespace
     */
    public const NAMESPACE_XHTML = &#039;http://www.w3.org/1999/xhtml&#039;;

    /**
     * IANA Link Relations Registry
     */
    public const IANA_LINK_RELATIONS_REGISTRY = &#039;http://www.iana.org/assignments/relation/&#039;;

    /**
     * No file source
     */
    public const FILE_SOURCE_NONE = 0;

    /**
     * Remote file source
     */
    public const FILE_SOURCE_REMOTE = 1;

    /**
     * Local file source
     */
    public const FILE_SOURCE_LOCAL = 2;

    /**
     * fsockopen() file source
     */
    public const FILE_SOURCE_FSOCKOPEN = 4;

    /**
     * cURL file source
     */
    public const FILE_SOURCE_CURL = 8;

    /**
     * file_get_contents() file source
     */
    public const FILE_SOURCE_FILE_GET_CONTENTS = 16;

    /**
     * @internal Default value of the HTTP Accept header when fetching/locating feeds
     */
    public const DEFAULT_HTTP_ACCEPT_HEADER = &#039;application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1&#039;;

    /**
     * @var array&lt;string, mixed&gt; Raw data
     * @access private
     */
    public $data = [];

    /**
     * @var string|string[]|null Error string (or array when multiple feeds are initialized)
     * @access private
     */
    public $error = null;

    /**
     * @var int HTTP status code
     * @see SimplePie::status_code()
     * @access private
     */
    public $status_code = 0;

    /**
     * @var Sanitize instance of Sanitize class
     * @see SimplePie::set_sanitize_class()
     * @access private
     */
    public $sanitize;

    /**
     * @var string SimplePie Useragent
     * @see SimplePie::set_useragent()
     * @access private
     */
    public $useragent = &#039;&#039;;

    /**
     * @var string Feed URL
     * @see SimplePie::set_feed_url()
     * @access private
     */
    public $feed_url;

    /**
     * @var ?string Original feed URL, or new feed URL iff HTTP 301 Moved Permanently
     * @see SimplePie::subscribe_url()
     * @access private
     */
    public $permanent_url = null;

    /**
     * @var File Instance of File class to use as a feed
     * @see SimplePie::set_file()
     */
    private $file;

    /**
     * @var string|false Raw feed data
     * @see SimplePie::set_raw_data()
     * @access private
     */
    public $raw_data;

    /**
     * @var int Timeout for fetching remote files
     * @see SimplePie::set_timeout()
     * @access private
     */
    public $timeout = 10;

    /**
     * @var array&lt;int, mixed&gt; Custom curl options
     * @see SimplePie::set_curl_options()
     * @access private
     */
    public $curl_options = [];

    /**
     * @var bool Forces fsockopen() to be used for remote files instead
     * of cURL, even if a new enough version is installed
     * @see SimplePie::force_fsockopen()
     * @access private
     */
    public $force_fsockopen = false;

    /**
     * @var bool Force the given data/URL to be treated as a feed no matter what
     * it appears like
     * @see SimplePie::force_feed()
     * @access private
     */
    public $force_feed = false;

    /**
     * @var bool Enable/Disable Caching
     * @see SimplePie::enable_cache()
     * @access private
     */
    private $enable_cache = true;

    /**
     * @var DataCache|null
     * @see SimplePie::set_cache()
     */
    private $cache = null;

    /**
     * @var NameFilter
     * @see SimplePie::set_cache_namefilter()
     */
    private $cache_namefilter;

    /**
     * @var bool Force SimplePie to fallback to expired cache, if enabled,
     * when feed is unavailable.
     * @see SimplePie::force_cache_fallback()
     * @access private
     */
    public $force_cache_fallback = false;

    /**
     * @var int Cache duration (in seconds)
     * @see SimplePie::set_cache_duration()
     * @access private
     */
    public $cache_duration = 3600;

    /**
     * @var int Auto-discovery cache duration (in seconds)
     * @see SimplePie::set_autodiscovery_cache_duration()
     * @access private
     */
    public $autodiscovery_cache_duration = 604800; // 7 Days.

    /**
     * @var string Cache location (relative to executing script)
     * @see SimplePie::set_cache_location()
     * @access private
     */
    public $cache_location = &#039;./cache&#039;;

    /**
     * @var string&amp;(callable(string): string) Function that creates the cache filename
     * @see SimplePie::set_cache_name_function()
     * @access private
     */
    public $cache_name_function = &#039;md5&#039;;

    /**
     * @var bool Reorder feed by date descending
     * @see SimplePie::enable_order_by_date()
     * @access private
     */
    public $order_by_date = true;

    /**
     * @var mixed Force input encoding to be set to the follow value
     * (false, or anything type-cast to false, disables this feature)
     * @see SimplePie::set_input_encoding()
     * @access private
     */
    public $input_encoding = false;

    /**
     * @var self::LOCATOR_* Feed Autodiscovery Level
     * @see SimplePie::set_autodiscovery_level()
     * @access private
     */
    public $autodiscovery = self::LOCATOR_ALL;

    /**
     * Class registry object
     *
     * @var Registry
     */
    public $registry;

    /**
     * @var int Maximum number of feeds to check with autodiscovery
     * @see SimplePie::set_max_checked_feeds()
     * @access private
     */
    public $max_checked_feeds = 10;

    /**
     * @var array&lt;Response&gt;|null All the feeds found during the autodiscovery process
     * @see SimplePie::get_all_discovered_feeds()
     * @access private
     */
    public $all_discovered_feeds = [];

    /**
     * @var string Web-accessible path to the handler_image.php file.
     * @see SimplePie::set_image_handler()
     * @access private
     */
    public $image_handler = &#039;&#039;;

    /**
     * @var array&lt;string&gt; Stores the URLs when multiple feeds are being initialized.
     * @see SimplePie::set_feed_url()
     * @access private
     */
    public $multifeed_url = [];

    /**
     * @var array&lt;int, static&gt; Stores SimplePie objects when multiple feeds initialized.
     * @access private
     */
    public $multifeed_objects = [];

    /**
     * @var array&lt;mixed&gt; Stores the get_object_vars() array for use with multifeeds.
     * @see SimplePie::set_feed_url()
     * @access private
     */
    public $config_settings = null;

    /**
     * @var int Stores the number of items to return per-feed with multifeeds.
     * @see SimplePie::set_item_limit()
     * @access private
     */
    public $item_limit = 0;

    /**
     * @var bool Stores if last-modified and/or etag headers were sent with the
     * request when checking a feed.
     */
    public $check_modified = false;

    /**
     * @var array&lt;string&gt; Stores the default attributes to be stripped by strip_attributes().
     * @see SimplePie::strip_attributes()
     * @access private
     */
    public $strip_attributes = [&#039;bgsound&#039;, &#039;class&#039;, &#039;expr&#039;, &#039;id&#039;, &#039;style&#039;, &#039;onclick&#039;, &#039;onerror&#039;, &#039;onfinish&#039;, &#039;onmouseover&#039;, &#039;onmouseout&#039;, &#039;onfocus&#039;, &#039;onblur&#039;, &#039;lowsrc&#039;, &#039;dynsrc&#039;];

    /**
     * @var array&lt;string, array&lt;string, string&gt;&gt; Stores the default attributes to add to different tags by add_attributes().
     * @see SimplePie::add_attributes()
     * @access private
     */
    public $add_attributes = [&#039;audio&#039; =&gt; [&#039;preload&#039; =&gt; &#039;none&#039;], &#039;iframe&#039; =&gt; [&#039;sandbox&#039; =&gt; &#039;allow-scripts allow-same-origin&#039;], &#039;video&#039; =&gt; [&#039;preload&#039; =&gt; &#039;none&#039;]];

    /**
     * @var array&lt;string&gt; Stores the default tags to be stripped by strip_htmltags().
     * @see SimplePie::strip_htmltags()
     * @access private
     */
    public $strip_htmltags = [&#039;base&#039;, &#039;blink&#039;, &#039;body&#039;, &#039;doctype&#039;, &#039;embed&#039;, &#039;font&#039;, &#039;form&#039;, &#039;frame&#039;, &#039;frameset&#039;, &#039;html&#039;, &#039;iframe&#039;, &#039;input&#039;, &#039;marquee&#039;, &#039;meta&#039;, &#039;noscript&#039;, &#039;object&#039;, &#039;param&#039;, &#039;script&#039;, &#039;style&#039;];

    /**
     * @var string[]|string Stores the default attributes to be renamed by rename_attributes().
     * @see SimplePie::rename_attributes()
     * @access private
     */
    public $rename_attributes = [];

    /**
     * @var bool Should we throw exceptions, or use the old-style error property?
     * @access private
     */
    public $enable_exceptions = false;

    /**
     * @var Client|null
     */
    private $http_client = null;

    /** @var bool Whether HTTP client has been injected */
    private $http_client_injected = false;

    /**
     * The SimplePie class contains feed level data and options
     *
     * To use SimplePie, create the SimplePie object with no parameters. You can
     * then set configuration options using the provided methods. After setting
     * them, you must initialise the feed using $feed-&gt;init(). At that point the
     * object&#039;s methods and properties will be available to you.
     *
     * Previously, it was possible to pass in the feed URL along with cache
     * options directly into the constructor. This has been removed as of 1.3 as
     * it caused a lot of confusion.
     *
     * @since 1.0 Preview Release
     */
    public function __construct()
    {
        if (version_compare(PHP_VERSION, &#039;7.2&#039;, &#039;&lt;&#039;)) {
            exit(&#039;Please upgrade to PHP 7.2 or newer.&#039;);
        }

        $this-&gt;set_useragent();

        $this-&gt;set_cache_namefilter(new CallableNameFilter($this-&gt;cache_name_function));

        // Other objects, instances created here so we can set options on them
        $this-&gt;sanitize = new Sanitize();
        $this-&gt;registry = new Registry();

        if (func_num_args() &gt; 0) {
            trigger_error(&#039;Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_duration() directly.&#039;, \E_USER_DEPRECATED);

            $args = func_get_args();
            switch (count($args)) {
                case 3:
                    $this-&gt;set_cache_duration($args[2]);
                    // no break
                case 2:
                    $this-&gt;set_cache_location($args[1]);
                    // no break
                case 1:
                    $this-&gt;set_feed_url($args[0]);
                    $this-&gt;init();
            }
        }
    }

    /**
     * Used for converting object to a string
     * @return string
     */
    public function __toString()
    {
        return md5(serialize($this-&gt;data));
    }

    /**
     * Remove items that link back to this before destroying this object
     * @return void
     */
    public function __destruct()
    {
        if (!gc_enabled()) {
            if (!empty($this-&gt;data[&#039;items&#039;])) {
                foreach ($this-&gt;data[&#039;items&#039;] as $item) {
                    $item-&gt;__destruct();
                }
                unset($item, $this-&gt;data[&#039;items&#039;]);
            }
            if (!empty($this-&gt;data[&#039;ordered_items&#039;])) {
                foreach ($this-&gt;data[&#039;ordered_items&#039;] as $item) {
                    $item-&gt;__destruct();
                }
                unset($item, $this-&gt;data[&#039;ordered_items&#039;]);
            }
        }
    }

    /**
     * Force the given data/URL to be treated as a feed
     *
     * This tells SimplePie to ignore the content-type provided by the server.
     * Be careful when using this option, as it will also disable autodiscovery.
     *
     * @since 1.1
     * @param bool $enable Force the given data/URL to be treated as a feed
     * @return void
     */
    public function force_feed(bool $enable = false)
    {
        $this-&gt;force_feed = $enable;
    }

    /**
     * Set the URL of the feed you want to parse
     *
     * This allows you to enter the URL of the feed you want to parse, or the
     * website you want to try to use auto-discovery on. This takes priority
     * over any set raw data.
     *
     * Deprecated since 1.9.0: You can set multiple feeds to mash together by passing an array instead
     * of a string for the $url. Remember that with each additional feed comes
     * additional processing and resources.
     *
     * @since 1.0 Preview Release
     * @see set_raw_data()
     * @param string|string[] $url This is the URL (or (deprecated) array of URLs) that you want to parse.
     * @return void
     */
    public function set_feed_url($url)
    {
        $this-&gt;multifeed_url = [];
        if (is_array($url)) {
            trigger_error(&#039;Fetching multiple feeds with single SimplePie instance is deprecated since SimplePie 1.9.0, create one SimplePie instance per feed and use SimplePie::merge_items to get a single list of items.&#039;, \E_USER_DEPRECATED);
            foreach ($url as $value) {
                $this-&gt;multifeed_url[] = $this-&gt;registry-&gt;call(Misc::class, &#039;fix_protocol&#039;, [$value, 1]);
            }
        } else {
            $this-&gt;feed_url = $this-&gt;registry-&gt;call(Misc::class, &#039;fix_protocol&#039;, [$url, 1]);
            $this-&gt;permanent_url = $this-&gt;feed_url;
        }
    }

    /**
     * Set an instance of {@see File} to use as a feed
     *
     * @deprecated since SimplePie 1.9.0, use \SimplePie\SimplePie::set_http_client() or \SimplePie\SimplePie::set_raw_data() instead.
     *
     * @param File &amp;$file
     * @return bool True on success, false on failure
     */
    public function set_file(File &amp;$file)
    {
        // trigger_error(sprintf(&#039;SimplePie\SimplePie::set_file() is deprecated since SimplePie 1.9.0, please use &quot;SimplePie\SimplePie::set_http_client()&quot; or &quot;SimplePie\SimplePie::set_raw_data()&quot; instead.&#039;), \E_USER_DEPRECATED);

        $this-&gt;feed_url = $file-&gt;get_final_requested_uri();
        $this-&gt;permanent_url = $this-&gt;feed_url;
        $this-&gt;file = &amp;$file;

        return true;
    }

    /**
     * Set the raw XML data to parse
     *
     * Allows you to use a string of RSS/Atom data instead of a remote feed.
     *
     * If you have a feed available as a string in PHP, you can tell SimplePie
     * to parse that data string instead of a remote feed. Any set feed URL
     * takes precedence.
     *
     * @since 1.0 Beta 3
     * @param string $data RSS or Atom data as a string.
     * @see set_feed_url()
     * @return void
     */
    public function set_raw_data(string $data)
    {
        $this-&gt;raw_data = $data;
    }

    /**
     * Set a PSR-18 client and PSR-17 factories
     *
     * Allows you to use your own HTTP client implementations.
     * This will become required with SimplePie 2.0.0.
     */
    final public function set_http_client(
        ClientInterface $http_client,
        RequestFactoryInterface $request_factory,
        UriFactoryInterface $uri_factory
    ): void {
        $this-&gt;http_client = new Psr18Client($http_client, $request_factory, $uri_factory);
    }

    /**
     * Set the default timeout for fetching remote feeds
     *
     * This allows you to change the maximum time the feed&#039;s server to respond
     * and send the feed back.
     *
     * @since 1.0 Beta 3
     * @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
     * @return void
     */
    public function set_timeout(int $timeout = 10)
    {
        if ($this-&gt;http_client_injected) {
            throw new SimplePieException(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure timeout in your HTTP client instead.&#039;,
                __METHOD__,
                self::class
            ));
        }

        $this-&gt;timeout = (int) $timeout;

        // Reset a possible existing FileClient,
        // so a new client with the changed value will be created
        if (is_object($this-&gt;http_client) &amp;&amp; $this-&gt;http_client instanceof FileClient) {
            $this-&gt;http_client = null;
        } elseif (is_object($this-&gt;http_client)) {
            // Trigger notice if a PSR-18 client was set
            trigger_error(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure the timeout in your HTTP client instead.&#039;,
                __METHOD__,
                get_class($this)
            ), \E_USER_NOTICE);
        }
    }

    /**
     * Set custom curl options
     *
     * This allows you to change default curl options
     *
     * @since 1.0 Beta 3
     * @param array&lt;int, mixed&gt; $curl_options Curl options to add to default settings
     * @return void
     */
    public function set_curl_options(array $curl_options = [])
    {
        if ($this-&gt;http_client_injected) {
            throw new SimplePieException(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure custom curl options in your HTTP client instead.&#039;,
                __METHOD__,
                self::class
            ));
        }

        $this-&gt;curl_options = $curl_options;

        // Reset a possible existing FileClient,
        // so a new client with the changed value will be created
        if (is_object($this-&gt;http_client) &amp;&amp; $this-&gt;http_client instanceof FileClient) {
            $this-&gt;http_client = null;
        } elseif (is_object($this-&gt;http_client)) {
            // Trigger notice if a PSR-18 client was set
            trigger_error(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure the curl options in your HTTP client instead.&#039;,
                __METHOD__,
                get_class($this)
            ), \E_USER_NOTICE);
        }
    }

    /**
     * Force SimplePie to use fsockopen() instead of cURL
     *
     * @since 1.0 Beta 3
     * @param bool $enable Force fsockopen() to be used
     * @return void
     */
    public function force_fsockopen(bool $enable = false)
    {
        if ($this-&gt;http_client_injected) {
            throw new SimplePieException(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure fsockopen in your HTTP client instead.&#039;,
                __METHOD__,
                self::class
            ));
        }

        $this-&gt;force_fsockopen = $enable;

        // Reset a possible existing FileClient,
        // so a new client with the changed value will be created
        if (is_object($this-&gt;http_client) &amp;&amp; $this-&gt;http_client instanceof FileClient) {
            $this-&gt;http_client = null;
        } elseif (is_object($this-&gt;http_client)) {
            // Trigger notice if a PSR-18 client was set
            trigger_error(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure fsockopen in your HTTP client instead.&#039;,
                __METHOD__,
                get_class($this)
            ), \E_USER_NOTICE);
        }
    }

    /**
     * Enable/disable caching in SimplePie.
     *
     * This option allows you to disable caching all-together in SimplePie.
     * However, disabling the cache can lead to longer load times.
     *
     * @since 1.0 Preview Release
     * @param bool $enable Enable caching
     * @return void
     */
    public function enable_cache(bool $enable = true)
    {
        $this-&gt;enable_cache = $enable;
    }

    /**
     * Set a PSR-16 implementation as cache
     *
     * @param CacheInterface $cache The PSR-16 cache implementation
     *
     * @return void
     */
    public function set_cache(CacheInterface $cache)
    {
        $this-&gt;cache = new Psr16($cache);
    }

    /**
     * SimplePie to continue to fall back to expired cache, if enabled, when
     * feed is unavailable.
     *
     * This tells SimplePie to ignore any file errors and fall back to cache
     * instead. This only works if caching is enabled and cached content
     * still exists.
     *
     * @deprecated since SimplePie 1.8.0, expired cache will not be used anymore.
     *
     * @param bool $enable Force use of cache on fail.
     * @return void
     */
    public function force_cache_fallback(bool $enable = false)
    {
        // @trigger_error(sprintf(&#039;SimplePie\SimplePie::force_cache_fallback() is deprecated since SimplePie 1.8.0, expired cache will not be used anymore.&#039;), \E_USER_DEPRECATED);
        $this-&gt;force_cache_fallback = $enable;
    }

    /**
     * Set the length of time (in seconds) that the contents of a feed will be
     * cached
     *
     * @param int $seconds The feed content cache duration
     * @return void
     */
    public function set_cache_duration(int $seconds = 3600)
    {
        $this-&gt;cache_duration = $seconds;
    }

    /**
     * Set the length of time (in seconds) that the autodiscovered feed URL will
     * be cached
     *
     * @param int $seconds The autodiscovered feed URL cache duration.
     * @return void
     */
    public function set_autodiscovery_cache_duration(int $seconds = 604800)
    {
        $this-&gt;autodiscovery_cache_duration = $seconds;
    }

    /**
     * Set the file system location where the cached files should be stored
     *
     * @deprecated since SimplePie 1.8.0, use SimplePie::set_cache() instead.
     *
     * @param string $location The file system location.
     * @return void
     */
    public function set_cache_location(string $location = &#039;./cache&#039;)
    {
        // @trigger_error(sprintf(&#039;SimplePie\SimplePie::set_cache_location() is deprecated since SimplePie 1.8.0, please use &quot;SimplePie\SimplePie::set_cache()&quot; instead.&#039;), \E_USER_DEPRECATED);
        $this-&gt;cache_location = $location;
    }

    /**
     * Return the filename (i.e. hash, without path and without extension) of the file to cache a given URL.
     *
     * @param string $url The URL of the feed to be cached.
     * @return string A filename (i.e. hash, without path and without extension).
     */
    public function get_cache_filename(string $url)
    {
        // Append custom parameters to the URL to avoid cache pollution in case of multiple calls with different parameters.
        $url .= $this-&gt;force_feed ? &#039;#force_feed&#039; : &#039;&#039;;
        $options = [];
        if ($this-&gt;timeout != 10) {
            $options[CURLOPT_TIMEOUT] = $this-&gt;timeout;
        }
        if ($this-&gt;useragent !== Misc::get_default_useragent()) {
            $options[CURLOPT_USERAGENT] = $this-&gt;useragent;
        }
        if (!empty($this-&gt;curl_options)) {
            foreach ($this-&gt;curl_options as $k =&gt; $v) {
                $options[$k] = $v;
            }
        }
        if (!empty($options)) {
            ksort($options);
            $url .= &#039;#&#039; . urlencode(var_export($options, true));
        }

        return $this-&gt;cache_namefilter-&gt;filter($url);
    }

    /**
     * Set whether feed items should be sorted into reverse chronological order
     *
     * @param bool $enable Sort as reverse chronological order.
     * @return void
     */
    public function enable_order_by_date(bool $enable = true)
    {
        $this-&gt;order_by_date = $enable;
    }

    /**
     * Set the character encoding used to parse the feed
     *
     * This overrides the encoding reported by the feed, however it will fall
     * back to the normal encoding detection if the override fails
     *
     * @param string|false $encoding Character encoding
     * @return void
     */
    public function set_input_encoding($encoding = false)
    {
        if ($encoding) {
            $this-&gt;input_encoding = (string) $encoding;
        } else {
            $this-&gt;input_encoding = false;
        }
    }

    /**
     * Set how much feed autodiscovery to do
     *
     * @see self::LOCATOR_NONE
     * @see self::LOCATOR_AUTODISCOVERY
     * @see self::LOCATOR_LOCAL_EXTENSION
     * @see self::LOCATOR_LOCAL_BODY
     * @see self::LOCATOR_REMOTE_EXTENSION
     * @see self::LOCATOR_REMOTE_BODY
     * @see self::LOCATOR_ALL
     * @param self::LOCATOR_* $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator)
     * @return void
     */
    public function set_autodiscovery_level(int $level = self::LOCATOR_ALL)
    {
        $this-&gt;autodiscovery = $level;
    }

    /**
     * Get the class registry
     *
     * Use this to override SimplePie&#039;s default classes
     *
     * @return Registry
     */
    public function &amp;get_registry()
    {
        return $this-&gt;registry;
    }

    /**
     * Set which class SimplePie uses for caching
     *
     * @deprecated since SimplePie 1.3, use {@see set_cache()} instead
     *
     * @param class-string&lt;Cache&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_cache_class(string $class = Cache::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::set_cache()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Cache::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for auto-discovery
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Locator&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_locator_class(string $class = Locator::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Locator::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for XML parsing
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Parser&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_parser_class(string $class = Parser::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Parser::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for remote file fetching
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;File&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_file_class(string $class = File::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(File::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for data sanitization
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Sanitize&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_sanitize_class(string $class = Sanitize::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Sanitize::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for handling feed items
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Item&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_item_class(string $class = Item::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Item::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for handling author data
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Author&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_author_class(string $class = Author::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Author::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for handling category data
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Category&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_category_class(string $class = Category::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Category::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for feed enclosures
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Enclosure&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_enclosure_class(string $class = Enclosure::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Enclosure::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for `&lt;media:text&gt;` captions
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Caption&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_caption_class(string $class = Caption::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Caption::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for `&lt;media:copyright&gt;`
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Copyright&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_copyright_class(string $class = Copyright::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Copyright::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for `&lt;media:credit&gt;`
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Credit&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_credit_class(string $class = Credit::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Credit::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for `&lt;media:rating&gt;`
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Rating&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_rating_class(string $class = Rating::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Rating::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for `&lt;media:restriction&gt;`
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Restriction&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_restriction_class(string $class = Restriction::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Restriction::class, $class, true);
    }

    /**
     * Set which class SimplePie uses for content-type sniffing
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Sniffer&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_content_type_sniffer_class(string $class = Sniffer::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Sniffer::class, $class, true);
    }

    /**
     * Set which class SimplePie uses item sources
     *
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
     *
     * @param class-string&lt;Source&gt; $class Name of custom class
     *
     * @return bool True on success, false otherwise
     */
    public function set_source_class(string $class = Source::class)
    {
        trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.3, please use &quot;SimplePie\SimplePie::get_registry()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        return $this-&gt;registry-&gt;register(Source::class, $class, true);
    }

    /**
     * Set the user agent string
     *
     * @param string $ua New user agent string.
     * @return void
     */
    public function set_useragent(?string $ua = null)
    {
        if ($this-&gt;http_client_injected) {
            throw new SimplePieException(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure user agent string in your HTTP client instead.&#039;,
                __METHOD__,
                self::class
            ));
        }

        if ($ua === null) {
            $ua = Misc::get_default_useragent();
        }

        $this-&gt;useragent = (string) $ua;

        // Reset a possible existing FileClient,
        // so a new client with the changed value will be created
        if (is_object($this-&gt;http_client) &amp;&amp; $this-&gt;http_client instanceof FileClient) {
            $this-&gt;http_client = null;
        } elseif (is_object($this-&gt;http_client)) {
            // Trigger notice if a PSR-18 client was set
            trigger_error(sprintf(
                &#039;Using &quot;%s()&quot; has no effect, because you already provided a HTTP client with &quot;%s::set_http_client()&quot;. Configure the useragent in your HTTP client instead.&#039;,
                __METHOD__,
                get_class($this)
            ), \E_USER_NOTICE);
        }
    }

    /**
     * Set a namefilter to modify the cache filename with
     *
     * @param NameFilter $filter
     *
     * @return void
     */
    public function set_cache_namefilter(NameFilter $filter): void
    {
        $this-&gt;cache_namefilter = $filter;
    }

    /**
     * Set callback function to create cache filename with
     *
     * @deprecated since SimplePie 1.8.0, use {@see set_cache_namefilter()} instead
     *
     * @param (string&amp;(callable(string): string))|null $function Callback function
     * @return void
     */
    public function set_cache_name_function(?string $function = null)
    {
        // trigger_error(sprintf(&#039;&quot;%s()&quot; is deprecated since SimplePie 1.8.0, please use &quot;SimplePie\SimplePie::set_cache_namefilter()&quot; instead.&#039;, __METHOD__), \E_USER_DEPRECATED);

        if ($function === null) {
            $function = &#039;md5&#039;;
        }

        $this-&gt;cache_name_function = $function;

        $this-&gt;set_cache_namefilter(new CallableNameFilter($this-&gt;cache_name_function));
    }

    /**
     * Set options to make SP as fast as possible
     *
     * Forgoes a substantial amount of data sanitization in favor of speed. This
     * turns SimplePie into a dumb parser of feeds.
     *
     * @param bool $set Whether to set them or not
     * @return void
     */
    public function set_stupidly_fast(bool $set = false)
    {
        if ($set) {
            $this-&gt;enable_order_by_date(false);
            $this-&gt;remove_div(false);
            $this-&gt;strip_comments(false);
            $this-&gt;strip_htmltags([]);
            $this-&gt;strip_attributes([]);
            $this-&gt;add_attributes([]);
            $this-&gt;set_image_handler(false);
            $this-&gt;set_https_domains([]);
        }
    }

    /**
     * Set maximum number of feeds to check with autodiscovery
     *
     * @param int $max Maximum number of feeds to check
     * @return void
     */
    public function set_max_checked_feeds(int $max = 10)
    {
        $this-&gt;max_checked_feeds = $max;
    }

    /**
     * @return void
     */
    public function remove_div(bool $enable = true)
    {
        $this-&gt;sanitize-&gt;remove_div($enable);
    }

    /**
     * @param string[]|string|false $tags Set a list of tags to strip, or set empty string to use default tags, or false to strip nothing.
     * @return void
     */
    public function strip_htmltags($tags = &#039;&#039;, ?bool $encode = null)
    {
        if ($tags === &#039;&#039;) {
            $tags = $this-&gt;strip_htmltags;
        }
        $this-&gt;sanitize-&gt;strip_htmltags($tags);
        if ($encode !== null) {
            $this-&gt;sanitize-&gt;encode_instead_of_strip($encode);
        }
    }

    /**
     * @return void
     */
    public function encode_instead_of_strip(bool $enable = true)
    {
        $this-&gt;sanitize-&gt;encode_instead_of_strip($enable);
    }

    /**
     * @param string[]|string $attribs
     * @return void
     */
    public function rename_attributes($attribs = &#039;&#039;)
    {
        if ($attribs === &#039;&#039;) {
            $attribs = $this-&gt;rename_attributes;
        }
        $this-&gt;sanitize-&gt;rename_attributes($attribs);
    }

    /**
     * @param string[]|string $attribs
     * @return void
     */
    public function strip_attributes($attribs = &#039;&#039;)
    {
        if ($attribs === &#039;&#039;) {
            $attribs = $this-&gt;strip_attributes;
        }
        $this-&gt;sanitize-&gt;strip_attributes($attribs);
    }

    /**
     * @param array&lt;string, array&lt;string, string&gt;&gt;|&#039;&#039; $attribs
     * @return void
     */
    public function add_attributes($attribs = &#039;&#039;)
    {
        if ($attribs === &#039;&#039;) {
            $attribs = $this-&gt;add_attributes;
        }
        $this-&gt;sanitize-&gt;add_attributes($attribs);
    }

    /**
     * Set the output encoding
     *
     * Allows you to override SimplePie&#039;s output to match that of your webpage.
     * This is useful for times when your webpages are not being served as
     * UTF-8. This setting will be obeyed by {@see handle_content_type()}, and
     * is similar to {@see set_input_encoding()}.
     *
     * It should be noted, however, that not all character encodings can support
     * all characters. If your page is being served as ISO-8859-1 and you try
     * to display a Japanese feed, you&#039;ll likely see garbled characters.
     * Because of this, it is highly recommended to ensure that your webpages
     * are served as UTF-8.
     *
     * The number of supported character encodings depends on whether your web
     * host supports {@link http://php.net/mbstring mbstring},
     * {@link http://php.net/iconv iconv}, or both. See
     * {@link http://simplepie.org/wiki/faq/Supported_Character_Encodings} for
     * more information.
     *
     * @param string $encoding
     * @return void
     */
    public function set_output_encoding(string $encoding = &#039;UTF-8&#039;)
    {
        $this-&gt;sanitize-&gt;set_output_encoding($encoding);
    }

    /**
     * @return void
     */
    public function strip_comments(bool $strip = false)
    {
        $this-&gt;sanitize-&gt;strip_comments($strip);
    }

    /**
     * Set element/attribute key/value pairs of HTML attributes
     * containing URLs that need to be resolved relative to the feed
     *
     * Defaults to |a|@href, |area|@href, |blockquote|@cite, |del|@cite,
     * |form|@action, |img|@longdesc, |img|@src, |input|@src, |ins|@cite,
     * |q|@cite
     *
     * @since 1.0
     * @param array&lt;string, string|string[]&gt;|null $element_attribute Element/attribute key/value pairs, null for default
     * @return void
     */
    public function set_url_replacements(?array $element_attribute = null)
    {
        $this-&gt;sanitize-&gt;set_url_replacements($element_attribute);
    }

    /**
     * Set the list of domains for which to force HTTPS.
     * @see Sanitize::set_https_domains()
     * @param array&lt;string&gt; $domains List of HTTPS domains. Example array(&#039;biz&#039;, &#039;example.com&#039;, &#039;example.org&#039;, &#039;www.example.net&#039;).
     * @return void
     */
    public function set_https_domains(array $domains = [])
    {
        $this-&gt;sanitize-&gt;set_https_domains($domains);
    }

    /**
     * Set the handler to enable the display of cached images.
     *
     * @param string|false $page Web-accessible path to the handler_image.php file.
     * @param string $qs The query string that the value should be passed to.
     * @return void
     */
    public function set_image_handler($page = false, string $qs = &#039;i&#039;)
    {
        if ($page !== false) {
            $this-&gt;sanitize-&gt;set_image_handler($page . &#039;?&#039; . $qs . &#039;=&#039;);
        } else {
            $this-&gt;image_handler = &#039;&#039;;
        }
    }

    /**
     * Set the limit for items returned per-feed with multifeeds
     *
     * @param int $limit The maximum number of items to return.
     * @return void
     */
    public function set_item_limit(int $limit = 0)
    {
        $this-&gt;item_limit = $limit;
    }

    /**
     * Enable throwing exceptions
     *
     * @param bool $enable Should we throw exceptions, or use the old-style error property?
     * @return void
     */
    public function enable_exceptions(bool $enable = true)
    {
        $this-&gt;enable_exceptions = $enable;
    }

    /**
     * Initialize the feed object
     *
     * This is what makes everything happen. Period. This is where all of the
     * configuration options get processed, feeds are fetched, cached, and
     * parsed, and all of that other good stuff.
     *
     * @return bool True if successful, false otherwise
     */
    public function init()
    {
        // Check absolute bare minimum requirements.
        if (!extension_loaded(&#039;xml&#039;) || !extension_loaded(&#039;pcre&#039;)) {
            $this-&gt;error = &#039;XML or PCRE extensions not loaded!&#039;;
            return false;
        }
        // Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP &lt; 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don&#039;t have xmlreader.
        elseif (!extension_loaded(&#039;xmlreader&#039;)) {
            static $xml_is_sane = null;
            if ($xml_is_sane === null) {
                $parser_check = xml_parser_create();
                xml_parse_into_struct($parser_check, &#039;&lt;foo&gt;&amp;amp;&lt;/foo&gt;&#039;, $values);
                if (\PHP_VERSION_ID &lt; 80000) {
                    xml_parser_free($parser_check);
                }
                $xml_is_sane = isset($values[0][&#039;value&#039;]);
            }
            if (!$xml_is_sane) {
                return false;
            }
        }

        // The default sanitize class gets set in the constructor, check if it has
        // changed.
        if ($this-&gt;registry-&gt;get_class(Sanitize::class) !== Sanitize::class) {
            $this-&gt;sanitize = $this-&gt;registry-&gt;create(Sanitize::class);
        }
        if (method_exists($this-&gt;sanitize, &#039;set_registry&#039;)) {
            $this-&gt;sanitize-&gt;set_registry($this-&gt;registry);
        }

        // Pass whatever was set with config options over to the sanitizer.
        // Pass the classes in for legacy support; new classes should use the registry instead
        $cache = $this-&gt;registry-&gt;get_class(Cache::class);
        \assert($cache !== null, &#039;Cache must be defined&#039;);
        $this-&gt;sanitize-&gt;pass_cache_data(
            $this-&gt;enable_cache,
            $this-&gt;cache_location,
            $this-&gt;cache_namefilter,
            $cache,
            $this-&gt;cache
        );

        $http_client = $this-&gt;get_http_client();

        if ($http_client instanceof Psr18Client) {
            $this-&gt;sanitize-&gt;set_http_client(
                $http_client-&gt;getHttpClient(),
                $http_client-&gt;getRequestFactory(),
                $http_client-&gt;getUriFactory()
            );
        }

        if (!empty($this-&gt;multifeed_url)) {
            $i = 0;
            $success = 0;
            $this-&gt;multifeed_objects = [];
            $this-&gt;error = [];
            foreach ($this-&gt;multifeed_url as $url) {
                $this-&gt;multifeed_objects[$i] = clone $this;
                $this-&gt;multifeed_objects[$i]-&gt;set_feed_url($url);
                $single_success = $this-&gt;multifeed_objects[$i]-&gt;init();
                $success |= $single_success;
                if (!$single_success) {
                    $this-&gt;error[$i] = $this-&gt;multifeed_objects[$i]-&gt;error();
                }
                $i++;
            }
            return (bool) $success;
        } elseif ($this-&gt;feed_url === null &amp;&amp; $this-&gt;raw_data === null) {
            return false;
        }

        $this-&gt;error = null;
        $this-&gt;data = [];
        $this-&gt;check_modified = false;
        $this-&gt;multifeed_objects = [];
        $cache = false;

        if ($this-&gt;feed_url !== null) {
            $parsed_feed_url = $this-&gt;registry-&gt;call(Misc::class, &#039;parse_url&#039;, [$this-&gt;feed_url]);

            // Decide whether to enable caching
            if ($this-&gt;enable_cache &amp;&amp; $parsed_feed_url[&#039;scheme&#039;] !== &#039;&#039;) {
                $cache = $this-&gt;get_cache($this-&gt;feed_url);
            }

            // Fetch the data into $this-&gt;raw_data
            if (($fetched = $this-&gt;fetch_data($cache)) === true) {
                return true;
            } elseif ($fetched === false) {
                return false;
            }

            [$headers, $sniffed] = $fetched;
        }

        // Empty response check
        if (empty($this-&gt;raw_data)) {
            $this-&gt;error = &quot;A feed could not be found at `$this-&gt;feed_url`. Empty body.&quot;;
            $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_NOTICE, __FILE__, __LINE__]);
            return false;
        }

        // Set up array of possible encodings
        $encodings = [];

        // First check to see if input has been overridden.
        if ($this-&gt;input_encoding !== false) {
            $encodings[] = strtoupper($this-&gt;input_encoding);
        }

        $application_types = [&#039;application/xml&#039;, &#039;application/xml-dtd&#039;, &#039;application/xml-external-parsed-entity&#039;];
        $text_types = [&#039;text/xml&#039;, &#039;text/xml-external-parsed-entity&#039;];

        // RFC 3023 (only applies to sniffed content)
        if (isset($sniffed)) {
            if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === &#039;application/&#039; &amp;&amp; substr($sniffed, -4) === &#039;+xml&#039;) {
                if (isset($headers[&#039;content-type&#039;]) &amp;&amp; preg_match(&#039;/;\x20?charset=([^;]*)/i&#039;, $headers[&#039;content-type&#039;], $charset)) {
                    $encodings[] = strtoupper($charset[1]);
                }
                $encodings = array_merge($encodings, $this-&gt;registry-&gt;call(Misc::class, &#039;xml_encoding&#039;, [$this-&gt;raw_data, &amp;$this-&gt;registry]));
                $encodings[] = &#039;UTF-8&#039;;
            } elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === &#039;text/&#039; &amp;&amp; substr($sniffed, -4) === &#039;+xml&#039;) {
                if (isset($headers[&#039;content-type&#039;]) &amp;&amp; preg_match(&#039;/;\x20?charset=([^;]*)/i&#039;, $headers[&#039;content-type&#039;], $charset)) {
                    $encodings[] = strtoupper($charset[1]);
                }
                $encodings[] = &#039;US-ASCII&#039;;
            }
            // Text MIME-type default
            elseif (substr($sniffed, 0, 5) === &#039;text/&#039;) {
                $encodings[] = &#039;UTF-8&#039;;
            }
        }

        // Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
        $encodings = array_merge($encodings, $this-&gt;registry-&gt;call(Misc::class, &#039;xml_encoding&#039;, [$this-&gt;raw_data, &amp;$this-&gt;registry]));
        $encodings[] = &#039;UTF-8&#039;;
        $encodings[] = &#039;ISO-8859-1&#039;;

        // There&#039;s no point in trying an encoding twice
        $encodings = array_unique($encodings);

        // Loop through each possible encoding, till we return something, or run out of possibilities
        foreach ($encodings as $encoding) {
            // Change the encoding to UTF-8 (as we always use UTF-8 internally)
            if ($utf8_data = $this-&gt;registry-&gt;call(Misc::class, &#039;change_encoding&#039;, [$this-&gt;raw_data, $encoding, &#039;UTF-8&#039;])) {
                // Create new parser
                $parser = $this-&gt;registry-&gt;create(Parser::class);

                // If it&#039;s parsed fine
                if ($parser-&gt;parse($utf8_data, &#039;UTF-8&#039;, $this-&gt;permanent_url ?? &#039;&#039;)) {
                    $this-&gt;data = $parser-&gt;get_data();
                    if (!($this-&gt;get_type() &amp; ~self::TYPE_NONE)) {
                        $this-&gt;error = &quot;A feed could not be found at `$this-&gt;feed_url`. This does not appear to be a valid RSS or Atom feed.&quot;;
                        $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_NOTICE, __FILE__, __LINE__]);
                        return false;
                    }

                    if (isset($headers)) {
                        $this-&gt;data[&#039;headers&#039;] = $headers;
                    }
                    $this-&gt;data[&#039;build&#039;] = Misc::get_build();

                    // Cache the file if caching is enabled
                    $this-&gt;data[&#039;cache_expiration_time&#039;] = $this-&gt;cache_duration + time();

                    if ($cache &amp;&amp; !$cache-&gt;set_data($this-&gt;get_cache_filename($this-&gt;feed_url), $this-&gt;data, $this-&gt;cache_duration)) {
                        trigger_error(&quot;$this-&gt;cache_location is not writable. Make sure you&#039;ve set the correct relative or absolute path, and that the location is server-writable.&quot;, E_USER_WARNING);
                    }
                    return true;
                }
            }
        }

        if (isset($parser)) {
            // We have an error, just set Misc::error to it and quit
            $this-&gt;error = $this-&gt;feed_url;
            $this-&gt;error .= sprintf(&#039; is invalid XML, likely due to invalid characters. XML error: %s at line %d, column %d&#039;, $parser-&gt;get_error_string(), $parser-&gt;get_current_line(), $parser-&gt;get_current_column());
        } else {
            $this-&gt;error = &#039;The data could not be converted to UTF-8.&#039;;
            if (!extension_loaded(&#039;mbstring&#039;) &amp;&amp; !extension_loaded(&#039;iconv&#039;) &amp;&amp; !class_exists(&#039;\UConverter&#039;)) {
                $this-&gt;error .= &#039; You MUST have either the iconv, mbstring or intl (PHP 5.5+) extension installed and enabled.&#039;;
            } else {
                $missingExtensions = [];
                if (!extension_loaded(&#039;iconv&#039;)) {
                    $missingExtensions[] = &#039;iconv&#039;;
                }
                if (!extension_loaded(&#039;mbstring&#039;)) {
                    $missingExtensions[] = &#039;mbstring&#039;;
                }
                if (!class_exists(&#039;\UConverter&#039;)) {
                    $missingExtensions[] = &#039;intl (PHP 5.5+)&#039;;
                }
                $this-&gt;error .= &#039; Try installing/enabling the &#039; . implode(&#039; or &#039;, $missingExtensions) . &#039; extension.&#039;;
            }
        }

        $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_NOTICE, __FILE__, __LINE__]);

        return false;
    }

    /**
     * Fetch the data
     *
     * If the data is already cached, attempt to fetch it from there instead
     *
     * @param Base|DataCache|false $cache Cache handler, or false to not load from the cache
     * @return array{array&lt;string, string&gt;, string}|bool Returns true if the data was loaded from the cache, or an array of HTTP headers and sniffed type
     */
    protected function fetch_data(&amp;$cache)
    {
        if ($cache instanceof Base) {
            // @trigger_error(sprintf(&#039;Providing $cache as &quot;\SimplePie\Cache\Base&quot; in %s() is deprecated since SimplePie 1.8.0, please provide &quot;\SimplePie\Cache\DataCache&quot; implementation instead.&#039;, __METHOD__), \E_USER_DEPRECATED);
            $cache = new BaseDataCache($cache);
        }

        // @phpstan-ignore-next-line Enforce PHPDoc type.
        if ($cache !== false &amp;&amp; !$cache instanceof DataCache) {
            throw new InvalidArgumentException(sprintf(
                &#039;%s(): Argument #1 ($cache) must be of type %s|false&#039;,
                __METHOD__,
                DataCache::class
            ), 1);
        }

        $cacheKey = $this-&gt;get_cache_filename($this-&gt;feed_url);

        // If it&#039;s enabled, use the cache
        if ($cache) {
            // Load the Cache
            $this-&gt;data = $cache-&gt;get_data($cacheKey, []);

            if (!empty($this-&gt;data)) {
                // If the cache is for an outdated build of SimplePie
                if (!isset($this-&gt;data[&#039;build&#039;]) || $this-&gt;data[&#039;build&#039;] !== Misc::get_build()) {
                    $cache-&gt;delete_data($cacheKey);
                    $this-&gt;data = [];
                }
                // If we&#039;ve hit a collision just rerun it with caching disabled
                elseif (isset($this-&gt;data[&#039;url&#039;]) &amp;&amp; $this-&gt;data[&#039;url&#039;] !== $this-&gt;feed_url) {
                    $cache = false;
                    $this-&gt;data = [];
                }
                // If we&#039;ve got a non feed_url stored (if the page isn&#039;t actually a feed, or is a redirect) use that URL.
                elseif (isset($this-&gt;data[&#039;feed_url&#039;])) {
                    // Do not need to do feed autodiscovery yet.
                    if ($this-&gt;data[&#039;feed_url&#039;] !== $this-&gt;data[&#039;url&#039;]) {
                        $this-&gt;set_feed_url($this-&gt;data[&#039;feed_url&#039;]);
                        $this-&gt;data[&#039;url&#039;] = $this-&gt;data[&#039;feed_url&#039;];

                        $cache-&gt;set_data($this-&gt;get_cache_filename($this-&gt;feed_url), $this-&gt;data, $this-&gt;autodiscovery_cache_duration);

                        return $this-&gt;init();
                    }

                    $cache-&gt;delete_data($this-&gt;get_cache_filename($this-&gt;feed_url));
                    $this-&gt;data = [];
                }
                // Check if the cache has been updated
                elseif (!isset($this-&gt;data[&#039;cache_expiration_time&#039;]) || $this-&gt;data[&#039;cache_expiration_time&#039;] &lt; time()) {
                    // Want to know if we tried to send last-modified and/or etag headers
                    // when requesting this file. (Note that it&#039;s up to the file to
                    // support this, but we don&#039;t always send the headers either.)
                    $this-&gt;check_modified = true;
                    if (isset($this-&gt;data[&#039;headers&#039;][&#039;last-modified&#039;]) || isset($this-&gt;data[&#039;headers&#039;][&#039;etag&#039;])) {
                        $headers = [
                            &#039;Accept&#039; =&gt; SimplePie::DEFAULT_HTTP_ACCEPT_HEADER,
                        ];
                        if (isset($this-&gt;data[&#039;headers&#039;][&#039;last-modified&#039;])) {
                            $headers[&#039;if-modified-since&#039;] = $this-&gt;data[&#039;headers&#039;][&#039;last-modified&#039;];
                        }
                        if (isset($this-&gt;data[&#039;headers&#039;][&#039;etag&#039;])) {
                            $headers[&#039;if-none-match&#039;] = $this-&gt;data[&#039;headers&#039;][&#039;etag&#039;];
                        }

                        try {
                            $file = $this-&gt;get_http_client()-&gt;request(Client::METHOD_GET, $this-&gt;feed_url, $headers);
                            $this-&gt;status_code = $file-&gt;get_status_code();
                        } catch (ClientException $th) {
                            $this-&gt;check_modified = false;
                            $this-&gt;status_code = 0;

                            if ($this-&gt;force_cache_fallback) {
                                $this-&gt;data[&#039;cache_expiration_time&#039;] = $this-&gt;cache_duration + time();
                                $cache-&gt;set_data($cacheKey, $this-&gt;data, $this-&gt;cache_duration);

                                return true;
                            }

                            $failedFileReason = $th-&gt;getMessage();
                        }

                        if ($this-&gt;status_code === 304) {
                            // Set raw_data to false here too, to signify that the cache
                            // is still valid.
                            $this-&gt;raw_data = false;
                            $this-&gt;data[&#039;cache_expiration_time&#039;] = $this-&gt;cache_duration + time();
                            $cache-&gt;set_data($cacheKey, $this-&gt;data, $this-&gt;cache_duration);

                            return true;
                        }
                    }
                }
                // If the cache is still valid, just return true
                else {
                    $this-&gt;raw_data = false;
                    return true;
                }
            }
            // If the cache is empty
            else {
                $this-&gt;data = [];
            }
        }

        // If we don&#039;t already have the file (it&#039;ll only exist if we&#039;ve opened it to check if the cache has been modified), open it.
        if (!isset($file)) {
            if ($this-&gt;file instanceof File &amp;&amp; $this-&gt;file-&gt;get_final_requested_uri() === $this-&gt;feed_url) {
                $file = &amp;$this-&gt;file;
            } elseif (isset($failedFileReason)) {
                // Do not try to fetch again if we already failed once.
                // If the file connection had an error, set SimplePie::error to that and quit
                $this-&gt;error = $failedFileReason;

                return !empty($this-&gt;data);
            } else {
                $headers = [
                    &#039;Accept&#039; =&gt; SimplePie::DEFAULT_HTTP_ACCEPT_HEADER,
                ];
                try {
                    $file = $this-&gt;get_http_client()-&gt;request(Client::METHOD_GET, $this-&gt;feed_url, $headers);
                } catch (ClientException $th) {
                    // If the file connection has an error, set SimplePie::error to that and quit
                    $this-&gt;error = $th-&gt;getMessage();

                    return !empty($this-&gt;data);
                }
            }
        }
        $this-&gt;status_code = $file-&gt;get_status_code();

        // If the file connection has an error, set SimplePie::error to that and quit
        if (!(!Misc::is_remote_uri($file-&gt;get_final_requested_uri()) || ($file-&gt;get_status_code() === 200 || $file-&gt;get_status_code() &gt; 206 &amp;&amp; $file-&gt;get_status_code() &lt; 300))) {
            $this-&gt;error = &#039;Retrieved unsupported status code &quot;&#039; . $this-&gt;status_code . &#039;&quot;&#039;;
            return !empty($this-&gt;data);
        }

        if (!$this-&gt;force_feed) {
            // Check if the supplied URL is a feed, if it isn&#039;t, look for it.
            $locate = $this-&gt;registry-&gt;create(Locator::class, [
                (!$file instanceof File) ? File::fromResponse($file) : $file,
                $this-&gt;timeout,
                $this-&gt;useragent,
                $this-&gt;max_checked_feeds,
                $this-&gt;force_fsockopen,
                $this-&gt;curl_options
            ]);

            $http_client = $this-&gt;get_http_client();

            if ($http_client instanceof Psr18Client) {
                $locate-&gt;set_http_client(
                    $http_client-&gt;getHttpClient(),
                    $http_client-&gt;getRequestFactory(),
                    $http_client-&gt;getUriFactory()
                );
            }

            if (!$locate-&gt;is_feed($file)) {
                $copyStatusCode = $file-&gt;get_status_code();
                $copyContentType = $file-&gt;get_header_line(&#039;content-type&#039;);
                try {
                    $microformats = false;
                    if (class_exists(&#039;DOMXpath&#039;) &amp;&amp; function_exists(&#039;Mf2\parse&#039;)) {
                        $doc = new \DOMDocument();
                        @$doc-&gt;loadHTML($file-&gt;get_body_content());
                        $xpath = new \DOMXpath($doc);
                        // Check for both h-feed and h-entry, as both a feed with no entries
                        // and a list of entries without an h-feed wrapper are both valid.
                        $query = &#039;//*[contains(concat(&quot; &quot;, @class, &quot; &quot;), &quot; h-feed &quot;) or &#039;.
                            &#039;contains(concat(&quot; &quot;, @class, &quot; &quot;), &quot; h-entry &quot;)]&#039;;

                        /** @var \DOMNodeList&lt;\DOMElement&gt; $result */
                        $result = $xpath-&gt;query($query);
                        $microformats = $result-&gt;length !== 0;
                    }
                    // Now also do feed discovery, but if microformats were found don&#039;t
                    // overwrite the current value of file.
                    $discovered = $locate-&gt;find(
                        $this-&gt;autodiscovery,
                        $this-&gt;all_discovered_feeds
                    );
                    if ($microformats) {
                        $hub = $locate-&gt;get_rel_link(&#039;hub&#039;);
                        $self = $locate-&gt;get_rel_link(&#039;self&#039;);
                        if ($hub || $self) {
                            $file = $this-&gt;store_links($file, $hub, $self);
                        }
                        // Push the current file onto all_discovered feeds so the user can
                        // be shown this as one of the options.
                        if ($this-&gt;all_discovered_feeds !== null) {
                            $this-&gt;all_discovered_feeds[] = $file;
                        }
                    } else {
                        if ($discovered) {
                            $file = $discovered;
                        } else {
                            // We need to unset this so that if SimplePie::set_file() has
                            // been called that object is untouched
                            unset($file);
                            $this-&gt;error = &quot;A feed could not be found at `$this-&gt;feed_url`; the status code is `$copyStatusCode` and content-type is `$copyContentType`&quot;;
                            $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_NOTICE, __FILE__, __LINE__]);
                            return false;
                        }
                    }
                } catch (SimplePieException $e) {
                    // We need to unset this so that if SimplePie::set_file() has been called that object is untouched
                    unset($file);
                    // This is usually because DOMDocument doesn&#039;t exist
                    $this-&gt;error = $e-&gt;getMessage();
                    $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_NOTICE, $e-&gt;getFile(), $e-&gt;getLine()]);
                    return false;
                }

                if ($cache) {
                    $this-&gt;data = [
                        &#039;url&#039; =&gt; $this-&gt;feed_url,
                        &#039;feed_url&#039; =&gt; $file-&gt;get_final_requested_uri(),
                        &#039;build&#039; =&gt; Misc::get_build(),
                        &#039;cache_expiration_time&#039; =&gt; $this-&gt;cache_duration + time(),
                    ];

                    if (!$cache-&gt;set_data($cacheKey, $this-&gt;data, $this-&gt;cache_duration)) {
                        trigger_error(&quot;$this-&gt;cache_location is not writable. Make sure you&#039;ve set the correct relative or absolute path, and that the location is server-writable.&quot;, E_USER_WARNING);
                    }
                }
            }
            $this-&gt;feed_url = $file-&gt;get_final_requested_uri();
            $locate = null;
        }

        $this-&gt;raw_data = $file-&gt;get_body_content();
        $this-&gt;permanent_url = $file-&gt;get_permanent_uri();

        $headers = [];
        foreach ($file-&gt;get_headers() as $key =&gt; $values) {
            $headers[$key] = implode(&#039;, &#039;, $values);
        }

        $sniffer = $this-&gt;registry-&gt;create(Sniffer::class, [&amp;$file]);
        $sniffed = $sniffer-&gt;get_type();

        return [$headers, $sniffed];
    }

    /**
     * Get the error message for the occurred error
     *
     * @return string|string[]|null Error message, or array of messages for multifeeds
     */
    public function error()
    {
        return $this-&gt;error;
    }

    /**
     * Get the last HTTP status code
     *
     * @return int Status code
     */
    public function status_code()
    {
        return $this-&gt;status_code;
    }

    /**
     * Get the raw XML
     *
     * This is the same as the old `$feed-&gt;enable_xml_dump(true)`, but returns
     * the data instead of printing it.
     *
     * @return string|false Raw XML data, false if the cache is used
     */
    public function get_raw_data()
    {
        return $this-&gt;raw_data;
    }

    /**
     * Get the character encoding used for output
     *
     * @since Preview Release
     * @return string
     */
    public function get_encoding()
    {
        return $this-&gt;sanitize-&gt;output_encoding;
    }

    /**
     * Send the content-type header with correct encoding
     *
     * This method ensures that the SimplePie-enabled page is being served with
     * the correct {@link http://www.iana.org/assignments/media-types/ mime-type}
     * and character encoding HTTP headers (character encoding determined by the
     * {@see set_output_encoding} config option).
     *
     * This won&#039;t work properly if any content or whitespace has already been
     * sent to the browser, because it relies on PHP&#039;s
     * {@link http://php.net/header header()} function, and these are the
     * circumstances under which the function works.
     *
     * Because it&#039;s setting these settings for the entire page (as is the nature
     * of HTTP headers), this should only be used once per page (again, at the
     * top).
     *
     * @param string $mime MIME type to serve the page as
     * @return void
     */
    public function handle_content_type(string $mime = &#039;text/html&#039;)
    {
        if (!headers_sent()) {
            $header = &quot;Content-type: $mime;&quot;;
            if ($this-&gt;get_encoding()) {
                $header .= &#039; charset=&#039; . $this-&gt;get_encoding();
            } else {
                $header .= &#039; charset=UTF-8&#039;;
            }
            header($header);
        }
    }

    /**
     * Get the type of the feed
     *
     * This returns a self::TYPE_* constant, which can be tested against
     * using {@link http://php.net/language.operators.bitwise bitwise operators}
     *
     * @since 0.8 (usage changed to using constants in 1.0)
     * @see self::TYPE_NONE Unknown.
     * @see self::TYPE_RSS_090 RSS 0.90.
     * @see self::TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape).
     * @see self::TYPE_RSS_091_USERLAND RSS 0.91 (Userland).
     * @see self::TYPE_RSS_091 RSS 0.91.
     * @see self::TYPE_RSS_092 RSS 0.92.
     * @see self::TYPE_RSS_093 RSS 0.93.
     * @see self::TYPE_RSS_094 RSS 0.94.
     * @see self::TYPE_RSS_10 RSS 1.0.
     * @see self::TYPE_RSS_20 RSS 2.0.x.
     * @see self::TYPE_RSS_RDF RDF-based RSS.
     * @see self::TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format).
     * @see self::TYPE_RSS_ALL Any version of RSS.
     * @see self::TYPE_ATOM_03 Atom 0.3.
     * @see self::TYPE_ATOM_10 Atom 1.0.
     * @see self::TYPE_ATOM_ALL Any version of Atom.
     * @see self::TYPE_ALL Any known/supported feed type.
     * @return int-mask-of&lt;self::TYPE_*&gt; constant
     */
    public function get_type()
    {
        if (!isset($this-&gt;data[&#039;type&#039;])) {
            $this-&gt;data[&#039;type&#039;] = self::TYPE_ALL;
            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;feed&#039;])) {
                $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_ATOM_10;
            } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;feed&#039;])) {
                $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_ATOM_03;
            } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;])) {
                if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_10][&#039;channel&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_10][&#039;image&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_10][&#039;item&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_10][&#039;textinput&#039;])) {
                    $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_10;
                }
                if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_090][&#039;channel&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_090][&#039;image&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_090][&#039;item&#039;])
                || isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_090][&#039;textinput&#039;])) {
                    $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_090;
                }
            } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;])) {
                $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_ALL;
                if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;attribs&#039;][&#039;&#039;][&#039;version&#039;])) {
                    switch (trim($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;attribs&#039;][&#039;&#039;][&#039;version&#039;])) {
                        case &#039;0.91&#039;:
                            $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_091;
                            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;skiphours&#039;][&#039;hour&#039;][0][&#039;data&#039;])) {
                                switch (trim($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;skiphours&#039;][&#039;hour&#039;][0][&#039;data&#039;])) {
                                    case &#039;0&#039;:
                                        $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_091_NETSCAPE;
                                        break;

                                    case &#039;24&#039;:
                                        $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_091_USERLAND;
                                        break;
                                }
                            }
                            break;

                        case &#039;0.92&#039;:
                            $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_092;
                            break;

                        case &#039;0.93&#039;:
                            $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_093;
                            break;

                        case &#039;0.94&#039;:
                            $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_094;
                            break;

                        case &#039;2.0&#039;:
                            $this-&gt;data[&#039;type&#039;] &amp;= self::TYPE_RSS_20;
                            break;
                    }
                }
            } else {
                $this-&gt;data[&#039;type&#039;] = self::TYPE_NONE;
            }
        }
        return $this-&gt;data[&#039;type&#039;];
    }

    /**
     * Get the URL for the feed
     *
     * When the &#039;permanent&#039; mode is enabled, returns the original feed URL,
     * except in the case of an `HTTP 301 Moved Permanently` status response,
     * in which case the location of the first redirection is returned.
     *
     * When the &#039;permanent&#039; mode is disabled (default),
     * may or may not be different from the URL passed to {@see set_feed_url()},
     * depending on whether auto-discovery was used, and whether there were
     * any redirects along the way.
     *
     * @since Preview Release (previously called `get_feed_url()` since SimplePie 0.8.)
     * @todo Support &lt;itunes:new-feed-url&gt;
     * @todo Also, |atom:link|@rel=self
     * @param bool $permanent Permanent mode to return only the original URL or the first redirection
     * iff it is a 301 redirection
     * @return string|null
     */
    public function subscribe_url(bool $permanent = false)
    {
        if ($permanent) {
            if ($this-&gt;permanent_url !== null) {
                // sanitize encodes ampersands which are required when used in a url.
                return str_replace(
                    &#039;&amp;amp;&#039;,
                    &#039;&amp;&#039;,
                    $this-&gt;sanitize(
                        $this-&gt;permanent_url,
                        self::CONSTRUCT_IRI
                    )
                );
            }
        } else {
            if ($this-&gt;feed_url !== null) {
                return str_replace(
                    &#039;&amp;amp;&#039;,
                    &#039;&amp;&#039;,
                    $this-&gt;sanitize(
                        $this-&gt;feed_url,
                        self::CONSTRUCT_IRI
                    )
                );
            }
        }
        return null;
    }

    /**
     * Get data for an feed-level element
     *
     * This method allows you to get access to ANY element/attribute that is a
     * sub-element of the opening feed tag.
     *
     * The return value is an indexed array of elements matching the given
     * namespace and tag name. Each element has `attribs`, `data` and `child`
     * subkeys. For `attribs` and `child`, these contain namespace subkeys.
     * `attribs` then has one level of associative name =&gt; value data (where
     * `value` is a string) after the namespace. `child` has tag-indexed keys
     * after the namespace, each member of which is an indexed array matching
     * this same format.
     *
     * For example:
     * &lt;pre&gt;
     * // This is probably a bad example because we already support
     * // &lt;media:content&gt; natively, but it shows you how to parse through
     * // the nodes.
     * $group = $item-&gt;get_item_tags(\SimplePie\SimplePie::NAMESPACE_MEDIARSS, &#039;group&#039;);
     * $content = $group[0][&#039;child&#039;][\SimplePie\SimplePie::NAMESPACE_MEDIARSS][&#039;content&#039;];
     * $file = $content[0][&#039;attribs&#039;][&#039;&#039;][&#039;url&#039;];
     * echo $file;
     * &lt;/pre&gt;
     *
     * @since 1.0
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
     * @param string $namespace The URL of the XML namespace of the elements you&#039;re trying to access
     * @param string $tag Tag name
     * @return array&lt;array&lt;string, mixed&gt;&gt;|null
     */
    public function get_feed_tags(string $namespace, string $tag)
    {
        $type = $this-&gt;get_type();
        if ($type &amp; self::TYPE_ATOM_10) {
            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;feed&#039;][0][&#039;child&#039;][$namespace][$tag])) {
                return $this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;feed&#039;][0][&#039;child&#039;][$namespace][$tag];
            }
        }
        if ($type &amp; self::TYPE_ATOM_03) {
            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;feed&#039;][0][&#039;child&#039;][$namespace][$tag])) {
                return $this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;feed&#039;][0][&#039;child&#039;][$namespace][$tag];
            }
        }
        if ($type &amp; self::TYPE_RSS_RDF) {
            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][$namespace][$tag])) {
                return $this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;child&#039;][$namespace][$tag];
            }
        }
        if ($type &amp; self::TYPE_RSS_SYNDICATION) {
            if (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;child&#039;][$namespace][$tag])) {
                return $this-&gt;data[&#039;child&#039;][self::NAMESPACE_RSS_20][&#039;rss&#039;][0][&#039;child&#039;][$namespace][$tag];
            }
        }
        return null;
    }

    /**
     * Get data for an channel-level element
     *
     * This method allows you to get access to ANY element/attribute in the
     * channel/header section of the feed.
     *
     * See {@see SimplePie::get_feed_tags()} for a description of the return value
     *
     * @since 1.0
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
     * @param string $namespace The URL of the XML namespace of the elements you&#039;re trying to access
     * @param string $tag Tag name
     * @return array&lt;array&lt;string, mixed&gt;&gt;|null
     */
    public function get_channel_tags(string $namespace, string $tag)
    {
        $type = $this-&gt;get_type();
        if ($type &amp; self::TYPE_ATOM_ALL) {
            if ($return = $this-&gt;get_feed_tags($namespace, $tag)) {
                return $return;
            }
        }
        if ($type &amp; self::TYPE_RSS_10) {
            if ($channel = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_10, &#039;channel&#039;)) {
                if (isset($channel[0][&#039;child&#039;][$namespace][$tag])) {
                    return $channel[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        if ($type &amp; self::TYPE_RSS_090) {
            if ($channel = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_090, &#039;channel&#039;)) {
                if (isset($channel[0][&#039;child&#039;][$namespace][$tag])) {
                    return $channel[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        if ($type &amp; self::TYPE_RSS_SYNDICATION) {
            if ($channel = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_20, &#039;channel&#039;)) {
                if (isset($channel[0][&#039;child&#039;][$namespace][$tag])) {
                    return $channel[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        return null;
    }

    /**
     * Get data for an channel-level element
     *
     * This method allows you to get access to ANY element/attribute in the
     * image/logo section of the feed.
     *
     * See {@see SimplePie::get_feed_tags()} for a description of the return value
     *
     * @since 1.0
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
     * @param string $namespace The URL of the XML namespace of the elements you&#039;re trying to access
     * @param string $tag Tag name
     * @return array&lt;array&lt;string, mixed&gt;&gt;|null
     */
    public function get_image_tags(string $namespace, string $tag)
    {
        $type = $this-&gt;get_type();
        if ($type &amp; self::TYPE_RSS_10) {
            if ($image = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_10, &#039;image&#039;)) {
                if (isset($image[0][&#039;child&#039;][$namespace][$tag])) {
                    return $image[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        if ($type &amp; self::TYPE_RSS_090) {
            if ($image = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_090, &#039;image&#039;)) {
                if (isset($image[0][&#039;child&#039;][$namespace][$tag])) {
                    return $image[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        if ($type &amp; self::TYPE_RSS_SYNDICATION) {
            if ($image = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;image&#039;)) {
                if (isset($image[0][&#039;child&#039;][$namespace][$tag])) {
                    return $image[0][&#039;child&#039;][$namespace][$tag];
                }
            }
        }
        return null;
    }

    /**
     * Get the base URL value from the feed
     *
     * Uses `&lt;xml:base&gt;` if available,
     * otherwise uses the first &#039;self&#039; link or the first &#039;alternate&#039; link of the feed,
     * or failing that, the URL of the feed itself.
     *
     * @see get_link
     * @see subscribe_url
     *
     * @param array&lt;string, mixed&gt; $element
     * @return string
     */
    public function get_base(array $element = [])
    {
        if (!empty($element[&#039;xml_base_explicit&#039;]) &amp;&amp; isset($element[&#039;xml_base&#039;])) {
            return $element[&#039;xml_base&#039;];
        }
        if (($link = $this-&gt;get_link(0, &#039;alternate&#039;)) !== null) {
            return $link;
        }
        if (($link = $this-&gt;get_link(0, &#039;self&#039;)) !== null) {
            return $link;
        }

        return $this-&gt;subscribe_url() ?? &#039;&#039;;
    }

    /**
     * Sanitize feed data
     *
     * @access private
     * @see Sanitize::sanitize()
     * @param string $data Data to sanitize
     * @param int-mask-of&lt;SimplePie::CONSTRUCT_*&gt; $type
     * @param string $base Base URL to resolve URLs against
     * @return string Sanitized data
     */
    public function sanitize(string $data, int $type, string $base = &#039;&#039;)
    {
        try {
            // This really returns string|false but changing encoding is uncommon and we are going to deprecate it, so let’s just lie to PHPStan in the interest of cleaner annotations.
            return $this-&gt;sanitize-&gt;sanitize($data, $type, $base);
        } catch (SimplePieException $e) {
            if (!$this-&gt;enable_exceptions) {
                $this-&gt;error = $e-&gt;getMessage();
                $this-&gt;registry-&gt;call(Misc::class, &#039;error&#039;, [$this-&gt;error, E_USER_WARNING, $e-&gt;getFile(), $e-&gt;getLine()]);
                return &#039;&#039;;
            }

            throw $e;
        }
    }

    /**
     * Get the title of the feed
     *
     * Uses `&lt;atom:title&gt;`, `&lt;title&gt;` or `&lt;dc:title&gt;`
     *
     * @since 1.0 (previously called `get_feed_title` since 0.8)
     * @return string|null
     */
    public function get_title()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_10_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_03_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_10, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_MAYBE_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_090, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_MAYBE_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_MAYBE_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        }

        return null;
    }

    /**
     * Get a category for the feed
     *
     * @since Unknown
     * @param int $key The category that you want to return. Remember that arrays begin with 0, not 1
     * @return Category|null
     */
    public function get_category(int $key = 0)
    {
        $categories = $this-&gt;get_categories();
        if (isset($categories[$key])) {
            return $categories[$key];
        }

        return null;
    }

    /**
     * Get all categories for the feed
     *
     * Uses `&lt;atom:category&gt;`, `&lt;category&gt;` or `&lt;dc:subject&gt;`
     *
     * @since Unknown
     * @return array&lt;Category&gt;|null List of {@see Category} objects
     */
    public function get_categories()
    {
        $categories = [];

        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;category&#039;) as $category) {
            $term = null;
            $scheme = null;
            $label = null;
            if (isset($category[&#039;attribs&#039;][&#039;&#039;][&#039;term&#039;])) {
                $term = $this-&gt;sanitize($category[&#039;attribs&#039;][&#039;&#039;][&#039;term&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($category[&#039;attribs&#039;][&#039;&#039;][&#039;scheme&#039;])) {
                $scheme = $this-&gt;sanitize($category[&#039;attribs&#039;][&#039;&#039;][&#039;scheme&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($category[&#039;attribs&#039;][&#039;&#039;][&#039;label&#039;])) {
                $label = $this-&gt;sanitize($category[&#039;attribs&#039;][&#039;&#039;][&#039;label&#039;], self::CONSTRUCT_TEXT);
            }
            $categories[] = $this-&gt;registry-&gt;create(Category::class, [$term, $scheme, $label]);
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;category&#039;) as $category) {
            // This is really the label, but keep this as the term also for BC.
            // Label will also work on retrieving because that falls back to term.
            $term = $this-&gt;sanitize($category[&#039;data&#039;], self::CONSTRUCT_TEXT);
            if (isset($category[&#039;attribs&#039;][&#039;&#039;][&#039;domain&#039;])) {
                $scheme = $this-&gt;sanitize($category[&#039;attribs&#039;][&#039;&#039;][&#039;domain&#039;], self::CONSTRUCT_TEXT);
            } else {
                $scheme = null;
            }
            $categories[] = $this-&gt;registry-&gt;create(Category::class, [$term, $scheme, null]);
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;subject&#039;) as $category) {
            $categories[] = $this-&gt;registry-&gt;create(Category::class, [$this-&gt;sanitize($category[&#039;data&#039;], self::CONSTRUCT_TEXT), null, null]);
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;subject&#039;) as $category) {
            $categories[] = $this-&gt;registry-&gt;create(Category::class, [$this-&gt;sanitize($category[&#039;data&#039;], self::CONSTRUCT_TEXT), null, null]);
        }

        if (!empty($categories)) {
            return array_unique($categories);
        }

        return null;
    }

    /**
     * Get an author for the feed
     *
     * @since 1.1
     * @param int $key The author that you want to return. Remember that arrays begin with 0, not 1
     * @return Author|null
     */
    public function get_author(int $key = 0)
    {
        $authors = $this-&gt;get_authors();
        if (isset($authors[$key])) {
            return $authors[$key];
        }

        return null;
    }

    /**
     * Get all authors for the feed
     *
     * Uses `&lt;atom:author&gt;`, `&lt;author&gt;`, `&lt;dc:creator&gt;` or `&lt;itunes:author&gt;`
     *
     * @since 1.1
     * @return array&lt;Author&gt;|null List of {@see Author} objects
     */
    public function get_authors()
    {
        $authors = [];
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;author&#039;) as $author) {
            $name = null;
            $uri = null;
            $email = null;
            if (isset($author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;name&#039;][0][&#039;data&#039;])) {
                $name = $this-&gt;sanitize($author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;name&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;uri&#039;][0][&#039;data&#039;])) {
                $uri = $author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;uri&#039;][0];
                $uri = $this-&gt;sanitize($uri[&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($uri));
            }
            if (isset($author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;email&#039;][0][&#039;data&#039;])) {
                $email = $this-&gt;sanitize($author[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;email&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if ($name !== null || $email !== null || $uri !== null) {
                $authors[] = $this-&gt;registry-&gt;create(Author::class, [$name, $uri, $email]);
            }
        }
        if ($author = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;author&#039;)) {
            $name = null;
            $url = null;
            $email = null;
            if (isset($author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;name&#039;][0][&#039;data&#039;])) {
                $name = $this-&gt;sanitize($author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;name&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;url&#039;][0][&#039;data&#039;])) {
                $url = $author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;url&#039;][0];
                $url = $this-&gt;sanitize($url[&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($url));
            }
            if (isset($author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;email&#039;][0][&#039;data&#039;])) {
                $email = $this-&gt;sanitize($author[0][&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;email&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if ($name !== null || $email !== null || $url !== null) {
                $authors[] = $this-&gt;registry-&gt;create(Author::class, [$name, $url, $email]);
            }
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;creator&#039;) as $author) {
            $authors[] = $this-&gt;registry-&gt;create(Author::class, [$this-&gt;sanitize($author[&#039;data&#039;], self::CONSTRUCT_TEXT), null, null]);
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;creator&#039;) as $author) {
            $authors[] = $this-&gt;registry-&gt;create(Author::class, [$this-&gt;sanitize($author[&#039;data&#039;], self::CONSTRUCT_TEXT), null, null]);
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_ITUNES, &#039;author&#039;) as $author) {
            $authors[] = $this-&gt;registry-&gt;create(Author::class, [$this-&gt;sanitize($author[&#039;data&#039;], self::CONSTRUCT_TEXT), null, null]);
        }

        if (!empty($authors)) {
            return array_unique($authors);
        }

        return null;
    }

    /**
     * Get a contributor for the feed
     *
     * @since 1.1
     * @param int $key The contrbutor that you want to return. Remember that arrays begin with 0, not 1
     * @return Author|null
     */
    public function get_contributor(int $key = 0)
    {
        $contributors = $this-&gt;get_contributors();
        if (isset($contributors[$key])) {
            return $contributors[$key];
        }

        return null;
    }

    /**
     * Get all contributors for the feed
     *
     * Uses `&lt;atom:contributor&gt;`
     *
     * @since 1.1
     * @return array&lt;Author&gt;|null List of {@see Author} objects
     */
    public function get_contributors()
    {
        $contributors = [];
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;contributor&#039;) as $contributor) {
            $name = null;
            $uri = null;
            $email = null;
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;name&#039;][0][&#039;data&#039;])) {
                $name = $this-&gt;sanitize($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;name&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;uri&#039;][0][&#039;data&#039;])) {
                $uri = $contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;uri&#039;][0];
                $uri = $this-&gt;sanitize($uri[&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($uri));
            }
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;email&#039;][0][&#039;data&#039;])) {
                $email = $this-&gt;sanitize($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;email&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if ($name !== null || $email !== null || $uri !== null) {
                $contributors[] = $this-&gt;registry-&gt;create(Author::class, [$name, $uri, $email]);
            }
        }
        foreach ((array) $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;contributor&#039;) as $contributor) {
            $name = null;
            $url = null;
            $email = null;
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;name&#039;][0][&#039;data&#039;])) {
                $name = $this-&gt;sanitize($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;name&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;url&#039;][0][&#039;data&#039;])) {
                $url = $contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;url&#039;][0];
                $url = $this-&gt;sanitize($url[&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($url));
            }
            if (isset($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;email&#039;][0][&#039;data&#039;])) {
                $email = $this-&gt;sanitize($contributor[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;email&#039;][0][&#039;data&#039;], self::CONSTRUCT_TEXT);
            }
            if ($name !== null || $email !== null || $url !== null) {
                $contributors[] = $this-&gt;registry-&gt;create(Author::class, [$name, $url, $email]);
            }
        }

        if (!empty($contributors)) {
            return array_unique($contributors);
        }

        return null;
    }

    /**
     * Get a single link for the feed
     *
     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
     * @param int $key The link that you want to return. Remember that arrays begin with 0, not 1
     * @param string $rel The relationship of the link to return
     * @return string|null Link URL
     */
    public function get_link(int $key = 0, string $rel = &#039;alternate&#039;)
    {
        $links = $this-&gt;get_links($rel);
        if (isset($links[$key])) {
            return $links[$key];
        }

        return null;
    }

    /**
     * Get the permalink for the item
     *
     * Returns the first link available with a relationship of &quot;alternate&quot;.
     * Identical to {@see get_link()} with key 0
     *
     * @see get_link
     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
     * @internal Added for parity between the parent-level and the item/entry-level.
     * @return string|null Link URL
     */
    public function get_permalink()
    {
        return $this-&gt;get_link(0);
    }

    /**
     * Get all links for the feed
     *
     * Uses `&lt;atom:link&gt;` or `&lt;link&gt;`
     *
     * @since Beta 2
     * @param string $rel The relationship of links to return
     * @return array&lt;string&gt;|null Links found for the feed (strings)
     */
    public function get_links(string $rel = &#039;alternate&#039;)
    {
        if (!isset($this-&gt;data[&#039;links&#039;])) {
            $this-&gt;data[&#039;links&#039;] = [];
            if ($links = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;link&#039;)) {
                foreach ($links as $link) {
                    if (isset($link[&#039;attribs&#039;][&#039;&#039;][&#039;href&#039;])) {
                        $link_rel = (isset($link[&#039;attribs&#039;][&#039;&#039;][&#039;rel&#039;])) ? $link[&#039;attribs&#039;][&#039;&#039;][&#039;rel&#039;] : &#039;alternate&#039;;
                        $this-&gt;data[&#039;links&#039;][$link_rel][] = $this-&gt;sanitize($link[&#039;attribs&#039;][&#039;&#039;][&#039;href&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($link));
                    }
                }
            }
            if ($links = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;link&#039;)) {
                foreach ($links as $link) {
                    if (isset($link[&#039;attribs&#039;][&#039;&#039;][&#039;href&#039;])) {
                        $link_rel = (isset($link[&#039;attribs&#039;][&#039;&#039;][&#039;rel&#039;])) ? $link[&#039;attribs&#039;][&#039;&#039;][&#039;rel&#039;] : &#039;alternate&#039;;
                        $this-&gt;data[&#039;links&#039;][$link_rel][] = $this-&gt;sanitize($link[&#039;attribs&#039;][&#039;&#039;][&#039;href&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($link));
                    }
                }
            }
            if ($links = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_10, &#039;link&#039;)) {
                $this-&gt;data[&#039;links&#039;][&#039;alternate&#039;][] = $this-&gt;sanitize($links[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($links[0]));
            }
            if ($links = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_090, &#039;link&#039;)) {
                $this-&gt;data[&#039;links&#039;][&#039;alternate&#039;][] = $this-&gt;sanitize($links[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($links[0]));
            }
            if ($links = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;link&#039;)) {
                $this-&gt;data[&#039;links&#039;][&#039;alternate&#039;][] = $this-&gt;sanitize($links[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($links[0]));
            }

            $keys = array_keys($this-&gt;data[&#039;links&#039;]);
            foreach ($keys as $key) {
                if ($this-&gt;registry-&gt;call(Misc::class, &#039;is_isegment_nz_nc&#039;, [$key])) {
                    if (isset($this-&gt;data[&#039;links&#039;][self::IANA_LINK_RELATIONS_REGISTRY . $key])) {
                        $this-&gt;data[&#039;links&#039;][self::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this-&gt;data[&#039;links&#039;][$key], $this-&gt;data[&#039;links&#039;][self::IANA_LINK_RELATIONS_REGISTRY . $key]);
                        $this-&gt;data[&#039;links&#039;][$key] = &amp;$this-&gt;data[&#039;links&#039;][self::IANA_LINK_RELATIONS_REGISTRY . $key];
                    } else {
                        $this-&gt;data[&#039;links&#039;][self::IANA_LINK_RELATIONS_REGISTRY . $key] = &amp;$this-&gt;data[&#039;links&#039;][$key];
                    }
                } elseif (substr($key, 0, 41) === self::IANA_LINK_RELATIONS_REGISTRY) {
                    $this-&gt;data[&#039;links&#039;][substr($key, 41)] = &amp;$this-&gt;data[&#039;links&#039;][$key];
                }
                $this-&gt;data[&#039;links&#039;][$key] = array_unique($this-&gt;data[&#039;links&#039;][$key]);
            }
        }

        if (isset($this-&gt;data[&#039;headers&#039;][&#039;link&#039;])) {
            $link_headers = $this-&gt;data[&#039;headers&#039;][&#039;link&#039;];
            if (is_array($link_headers)) {
                $link_headers = implode(&#039;,&#039;, $link_headers);
            }
            // https://datatracker.ietf.org/doc/html/rfc8288
            if (is_string($link_headers) &amp;&amp;
                preg_match_all(&#039;/&lt;(?P&lt;uri&gt;[^&gt;]+)&gt;\s*;\s*rel\s*=\s*(?P&lt;quote&gt;&quot;?)&#039; . preg_quote($rel) . &#039;(?P=quote)\s*(?=,|$)/i&#039;, $link_headers, $matches)) {
                return $matches[&#039;uri&#039;];
            }
        }

        if (isset($this-&gt;data[&#039;links&#039;][$rel])) {
            return $this-&gt;data[&#039;links&#039;][$rel];
        }

        return null;
    }

    /**
     * @return ?array&lt;Response&gt;
     */
    public function get_all_discovered_feeds()
    {
        return $this-&gt;all_discovered_feeds;
    }

    /**
     * Get the content for the item
     *
     * Uses `&lt;atom:subtitle&gt;`, `&lt;atom:tagline&gt;`, `&lt;description&gt;`,
     * `&lt;dc:description&gt;`, `&lt;itunes:summary&gt;` or `&lt;itunes:subtitle&gt;`
     *
     * @since 1.0 (previously called `get_feed_description()` since 0.8)
     * @return string|null
     */
    public function get_description()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;subtitle&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_10_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;tagline&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_03_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_10, &#039;description&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_MAYBE_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_090, &#039;description&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_MAYBE_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;description&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;description&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;description&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ITUNES, &#039;summary&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_HTML, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ITUNES, &#039;subtitle&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_HTML, $this-&gt;get_base($return[0]));
        }

        return null;
    }

    /**
     * Get the copyright info for the feed
     *
     * Uses `&lt;atom:rights&gt;`, `&lt;atom:copyright&gt;` or `&lt;dc:rights&gt;`
     *
     * @since 1.0 (previously called `get_feed_copyright()` since 0.8)
     * @return string|null
     */
    public function get_copyright()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;rights&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_10_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_03, &#039;copyright&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], $this-&gt;registry-&gt;call(Misc::class, &#039;atom_03_construct_type&#039;, [$return[0][&#039;attribs&#039;]]), $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;copyright&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;rights&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;rights&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        }

        return null;
    }

    /**
     * Get the language for the feed
     *
     * Uses `&lt;language&gt;`, `&lt;dc:language&gt;`, or @xml_lang
     *
     * @since 1.0 (previously called `get_feed_language()` since 0.8)
     * @return string|null
     */
    public function get_language()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;language&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_11, &#039;language&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_DC_10, &#039;language&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;feed&#039;][0][&#039;xml_lang&#039;])) {
            return $this-&gt;sanitize($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_10][&#039;feed&#039;][0][&#039;xml_lang&#039;], self::CONSTRUCT_TEXT);
        } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;feed&#039;][0][&#039;xml_lang&#039;])) {
            return $this-&gt;sanitize($this-&gt;data[&#039;child&#039;][self::NAMESPACE_ATOM_03][&#039;feed&#039;][0][&#039;xml_lang&#039;], self::CONSTRUCT_TEXT);
        } elseif (isset($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;xml_lang&#039;])) {
            return $this-&gt;sanitize($this-&gt;data[&#039;child&#039;][self::NAMESPACE_RDF][&#039;RDF&#039;][0][&#039;xml_lang&#039;], self::CONSTRUCT_TEXT);
        } elseif (isset($this-&gt;data[&#039;headers&#039;][&#039;content-language&#039;])) {
            return $this-&gt;sanitize($this-&gt;data[&#039;headers&#039;][&#039;content-language&#039;], self::CONSTRUCT_TEXT);
        }

        return null;
    }

    /**
     * Get the latitude coordinates for the item
     *
     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
     *
     * Uses `&lt;geo:lat&gt;` or `&lt;georss:point&gt;`
     *
     * @since 1.0
     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
     * @link http://www.georss.org/ GeoRSS
     * @return float|null
     */
    public function get_latitude()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, &#039;lat&#039;)) {
            return (float) $return[0][&#039;data&#039;];
        } elseif (($return = $this-&gt;get_channel_tags(self::NAMESPACE_GEORSS, &#039;point&#039;)) &amp;&amp; preg_match(&#039;/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/&#039;, trim($return[0][&#039;data&#039;]), $match)) {
            return (float) $match[1];
        }

        return null;
    }

    /**
     * Get the longitude coordinates for the feed
     *
     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
     *
     * Uses `&lt;geo:long&gt;`, `&lt;geo:lon&gt;` or `&lt;georss:point&gt;`
     *
     * @since 1.0
     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
     * @link http://www.georss.org/ GeoRSS
     * @return float|null
     */
    public function get_longitude()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, &#039;long&#039;)) {
            return (float) $return[0][&#039;data&#039;];
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, &#039;lon&#039;)) {
            return (float) $return[0][&#039;data&#039;];
        } elseif (($return = $this-&gt;get_channel_tags(self::NAMESPACE_GEORSS, &#039;point&#039;)) &amp;&amp; preg_match(&#039;/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/&#039;, trim($return[0][&#039;data&#039;]), $match)) {
            return (float) $match[2];
        }

        return null;
    }

    /**
     * Get the feed logo&#039;s title
     *
     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a &quot;feed logo&quot; title.
     *
     * Uses `&lt;image&gt;&lt;title&gt;` or `&lt;image&gt;&lt;dc:title&gt;`
     *
     * @return string|null
     */
    public function get_image_title()
    {
        if ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_10, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_090, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_DC_11, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_DC_10, &#039;title&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_TEXT);
        }

        return null;
    }

    /**
     * Get the feed logo&#039;s URL
     *
     * RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to
     * have a &quot;feed logo&quot; URL. This points directly to the image itself.
     *
     * Uses `&lt;itunes:image&gt;`, `&lt;atom:logo&gt;`, `&lt;atom:icon&gt;`,
     * `&lt;image&gt;&lt;title&gt;` or `&lt;image&gt;&lt;dc:title&gt;`
     *
     * @return string|null
     */
    public function get_image_url()
    {
        if ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ITUNES, &#039;image&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;attribs&#039;][&#039;&#039;][&#039;href&#039;], self::CONSTRUCT_IRI);
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;logo&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_channel_tags(self::NAMESPACE_ATOM_10, &#039;icon&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_10, &#039;url&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_090, &#039;url&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;url&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        }

        return null;
    }


    /**
     * Get the feed logo&#039;s link
     *
     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a &quot;feed logo&quot; link. This
     * points to a human-readable page that the image should link to.
     *
     * Uses `&lt;itunes:image&gt;`, `&lt;atom:logo&gt;`, `&lt;atom:icon&gt;`,
     * `&lt;image&gt;&lt;title&gt;` or `&lt;image&gt;&lt;dc:title&gt;`
     *
     * @return string|null
     */
    public function get_image_link()
    {
        if ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_10, &#039;link&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_090, &#039;link&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        } elseif ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;link&#039;)) {
            return $this-&gt;sanitize($return[0][&#039;data&#039;], self::CONSTRUCT_IRI, $this-&gt;get_base($return[0]));
        }

        return null;
    }

    /**
     * Get the feed logo&#039;s link
     *
     * RSS 2.0 feeds are allowed to have a &quot;feed logo&quot; width.
     *
     * Uses `&lt;image&gt;&lt;width&gt;` or defaults to 88 if no width is specified and
     * the feed is an RSS 2.0 feed.
     *
     * @return int|null
     */
    public function get_image_width()
    {
        if ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;width&#039;)) {
            return intval($return[0][&#039;data&#039;]);
        } elseif ($this-&gt;get_type() &amp; self::TYPE_RSS_SYNDICATION &amp;&amp; $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;url&#039;)) {
            return 88;
        }

        return null;
    }

    /**
     * Get the feed logo&#039;s height
     *
     * RSS 2.0 feeds are allowed to have a &quot;feed logo&quot; height.
     *
     * Uses `&lt;image&gt;&lt;height&gt;` or defaults to 31 if no height is specified and
     * the feed is an RSS 2.0 feed.
     *
     * @return int|null
     */
    public function get_image_height()
    {
        if ($return = $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;height&#039;)) {
            return intval($return[0][&#039;data&#039;]);
        } elseif ($this-&gt;get_type() &amp; self::TYPE_RSS_SYNDICATION &amp;&amp; $this-&gt;get_image_tags(self::NAMESPACE_RSS_20, &#039;url&#039;)) {
            return 31;
        }

        return null;
    }

    /**
     * Get the number of items in the feed
     *
     * This is well-suited for {@link http://php.net/for for()} loops with
     * {@see get_item()}
     *
     * @param int $max Maximum value to return. 0 for no limit
     * @return int Number of items in the feed
     */
    public function get_item_quantity(int $max = 0)
    {
        $qty = count($this-&gt;get_items());
        if ($max === 0) {
            return $qty;
        }

        return min($qty, $max);
    }

    /**
     * Get a single item from the feed
     *
     * This is better suited for {@link http://php.net/for for()} loops, whereas
     * {@see get_items()} is better suited for
     * {@link http://php.net/foreach foreach()} loops.
     *
     * @see get_item_quantity()
     * @since Beta 2
     * @param int $key The item that you want to return. Remember that arrays begin with 0, not 1
     * @return Item|null
     */
    public function get_item(int $key = 0)
    {
        $items = $this-&gt;get_items();
        if (isset($items[$key])) {
            return $items[$key];
        }

        return null;
    }

    /**
     * Get all items from the feed
     *
     * This is better suited for {@link http://php.net/for for()} loops, whereas
     * {@see get_items()} is better suited for
     * {@link http://php.net/foreach foreach()} loops.
     *
     * @see get_item_quantity
     * @since Beta 2
     * @param int $start Index to start at
     * @param int $end Number of items to return. 0 for all items after `$start`
     * @return Item[] List of {@see Item} objects
     */
    public function get_items(int $start = 0, int $end = 0)
    {
        if (!isset($this-&gt;data[&#039;items&#039;])) {
            if (!empty($this-&gt;multifeed_objects)) {
                $this-&gt;data[&#039;items&#039;] = SimplePie::merge_items($this-&gt;multifeed_objects, $start, $end, $this-&gt;item_limit);
                if (empty($this-&gt;data[&#039;items&#039;])) {
                    return [];
                }
                return $this-&gt;data[&#039;items&#039;];
            }
            $this-&gt;data[&#039;items&#039;] = [];
            if ($items = $this-&gt;get_feed_tags(self::NAMESPACE_ATOM_10, &#039;entry&#039;)) {
                $keys = array_keys($items);
                foreach ($keys as $key) {
                    $this-&gt;data[&#039;items&#039;][] = $this-&gt;make_item($items[$key]);
                }
            }
            if ($items = $this-&gt;get_feed_tags(self::NAMESPACE_ATOM_03, &#039;entry&#039;)) {
                $keys = array_keys($items);
                foreach ($keys as $key) {
                    $this-&gt;data[&#039;items&#039;][] = $this-&gt;make_item($items[$key]);
                }
            }
            if ($items = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_10, &#039;item&#039;)) {
                $keys = array_keys($items);
                foreach ($keys as $key) {
                    $this-&gt;data[&#039;items&#039;][] = $this-&gt;make_item($items[$key]);
                }
            }
            if ($items = $this-&gt;get_feed_tags(self::NAMESPACE_RSS_090, &#039;item&#039;)) {
                $keys = array_keys($items);
                foreach ($keys as $key) {
                    $this-&gt;data[&#039;items&#039;][] = $this-&gt;make_item($items[$key]);
                }
            }
            if ($items = $this-&gt;get_channel_tags(self::NAMESPACE_RSS_20, &#039;item&#039;)) {
                $keys = array_keys($items);
                foreach ($keys as $key) {
                    $this-&gt;data[&#039;items&#039;][] = $this-&gt;make_item($items[$key]);
                }
            }
        }

        if (empty($this-&gt;data[&#039;items&#039;])) {
            return [];
        }

        if ($this-&gt;order_by_date) {
            if (!isset($this-&gt;data[&#039;ordered_items&#039;])) {
                $this-&gt;data[&#039;ordered_items&#039;] = $this-&gt;data[&#039;items&#039;];
                usort($this-&gt;data[&#039;ordered_items&#039;], [get_class($this), &#039;sort_items&#039;]);
            }
            $items = $this-&gt;data[&#039;ordered_items&#039;];
        } else {
            $items = $this-&gt;data[&#039;items&#039;];
        }
        // Slice the data as desired
        if ($end === 0) {
            return array_slice($items, $start);
        }

        return array_slice($items, $start, $end);
    }

    /**
     * Set the favicon handler
     *
     * @deprecated Use your own favicon handling instead
     * @param string|false $page
     * @return bool
     */
    public function set_favicon_handler($page = false, string $qs = &#039;i&#039;)
    {
        trigger_error(&#039;Favicon handling has been removed since SimplePie 1.3, please use your own handling&#039;, \E_USER_DEPRECATED);
        return false;
    }

    /**
     * Get the favicon for the current feed
     *
     * @deprecated Use your own favicon handling instead
     * @return string|bool
     */
    public function get_favicon()
    {
        trigger_error(&#039;Favicon handling has been removed since SimplePie 1.3, please use your own handling&#039;, \E_USER_DEPRECATED);

        if (($url = $this-&gt;get_link()) !== null) {
            return &#039;https://www.google.com/s2/favicons?domain=&#039; . urlencode($url);
        }

        return false;
    }

    /**
     * Magic method handler
     *
     * @param string $method Method name
     * @param array&lt;mixed&gt; $args Arguments to the method
     * @return mixed
     */
    public function __call(string $method, array $args)
    {
        if (strpos($method, &#039;subscribe_&#039;) === 0) {
            trigger_error(&#039;subscribe_*() has been deprecated since SimplePie 1.3, implement the callback yourself&#039;, \E_USER_DEPRECATED);
            return &#039;&#039;;
        }
        if ($method === &#039;enable_xml_dump&#039;) {
            trigger_error(&#039;enable_xml_dump() has been deprecated since SimplePie 1.3, use get_raw_data() instead&#039;, \E_USER_DEPRECATED);
            return false;
        }

        $class = get_class($this);
        $trace = debug_backtrace(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection
        $file = $trace[0][&#039;file&#039;] ?? &#039;&#039;;
        $line = $trace[0][&#039;line&#039;] ?? &#039;&#039;;
        throw new SimplePieException(&quot;Call to undefined method $class::$method() in $file on line $line&quot;);
    }

    /**
     * Item factory
     *
     * @param array&lt;string, mixed&gt; $data
     */
    private function make_item(array $data): Item
    {
        $item = $this-&gt;registry-&gt;create(Item::class, [$this, $data]);
        $item-&gt;set_sanitize($this-&gt;sanitize);

        return $item;
    }

    /**
     * Sorting callback for items
     *
     * @access private
     * @param Item $a
     * @param Item $b
     * @return -1|0|1
     */
    public static function sort_items(Item $a, Item $b)
    {
        $a_date = $a-&gt;get_date(&#039;U&#039;);
        $b_date = $b-&gt;get_date(&#039;U&#039;);
        if ($a_date &amp;&amp; $b_date) {
            return $a_date &gt; $b_date ? -1 : 1;
        }
        // Sort items without dates to the top.
        if ($a_date) {
            return 1;
        }
        if ($b_date) {
            return -1;
        }
        return 0;
    }

    /**
     * Merge items from several feeds into one
     *
     * If you&#039;re merging multiple feeds together, they need to all have dates
     * for the items or else SimplePie will refuse to sort them.
     *
     * @link http://simplepie.org/wiki/tutorial/sort_multiple_feeds_by_time_and_date#if_feeds_require_separate_per-feed_settings
     * @param array&lt;SimplePie&gt; $urls List of SimplePie feed objects to merge
     * @param int $start Starting item
     * @param int $end Number of items to return
     * @param int $limit Maximum number of items per feed
     * @return array&lt;Item&gt;
     */
    public static function merge_items(array $urls, int $start = 0, int $end = 0, int $limit = 0)
    {
        if (count($urls) &gt; 0) {
            $items = [];
            foreach ($urls as $arg) {
                if ($arg instanceof SimplePie) {
                    $items = array_merge($items, $arg-&gt;get_items(0, $limit));

                    // @phpstan-ignore-next-line Enforce PHPDoc type.
                } else {
                    trigger_error(&#039;Arguments must be SimplePie objects&#039;, E_USER_WARNING);
                }
            }

            usort($items, [get_class($urls[0]), &#039;sort_items&#039;]);

            if ($end === 0) {
                return array_slice($items, $start);
            }

            return array_slice($items, $start, $end);
        }

        trigger_error(&#039;Cannot merge zero SimplePie objects&#039;, E_USER_WARNING);
        return [];
    }

    /**
     * Store PubSubHubbub links as headers
     *
     * There is no way to find PuSH links in the body of a microformats feed,
     * so they are added to the headers when found, to be used later by get_links.
     */
    private function store_links(Response $file, ?string $hub, ?string $self): Response
    {
        $linkHeaderLine = $file-&gt;get_header_line(&#039;link&#039;);
        $linkHeader = $file-&gt;get_header(&#039;link&#039;);

        if ($hub &amp;&amp; !preg_match(&#039;/rel=hub/&#039;, $linkHeaderLine)) {
            $linkHeader[] = &#039;&lt;&#039;.$hub.&#039;&gt;; rel=hub&#039;;
        }

        if ($self &amp;&amp; !preg_match(&#039;/rel=self/&#039;, $linkHeaderLine)) {
            $linkHeader[] = &#039;&lt;&#039;.$self.&#039;&gt;; rel=self&#039;;
        }

        if (count($linkHeader) &gt; 0) {
            $file = $file-&gt;with_header(&#039;link&#039;, $linkHeader);
        }

        return $file;
    }

    /**
     * Get a DataCache
     *
     * @param string $feed_url Only needed for BC, can be removed in SimplePie 2.0.0
     *
     * @return DataCache
     */
    private function get_cache(string $feed_url = &#039;&#039;): DataCache
    {
        if ($this-&gt;cache === null) {
            // @trigger_error(sprintf(&#039;Not providing as PSR-16 cache implementation is deprecated since SimplePie 1.8.0, please use &quot;SimplePie\SimplePie::set_cache()&quot;.&#039;), \E_USER_DEPRECATED);
            $cache = $this-&gt;registry-&gt;call(Cache::class, &#039;get_handler&#039;, [
                $this-&gt;cache_location,
                $this-&gt;get_cache_filename($feed_url),
                Base::TYPE_FEED
            ]);

            return new BaseDataCache($cache);
        }

        return $this-&gt;cache;
    }

    /**
     * Get a HTTP client
     */
    private function get_http_client(): Client
    {
        if ($this-&gt;http_client === null) {
            $this-&gt;http_client = new FileClient(
                $this-&gt;get_registry(),
                [
                    &#039;timeout&#039; =&gt; $this-&gt;timeout,
                    &#039;redirects&#039; =&gt; 5,
                    &#039;useragent&#039; =&gt; $this-&gt;useragent,
                    &#039;force_fsockopen&#039; =&gt; $this-&gt;force_fsockopen,
                    &#039;curl_options&#039; =&gt; $this-&gt;curl_options,
                ]
            );
            $this-&gt;http_client_injected = true;
        }

        return $this-&gt;http_client;
    }
}

class_alias(&#039;SimplePie\SimplePie&#039;, &#039;SimplePie&#039;);
</pre></td></tr><center><br>sh-3ll <font color="green">1.0</font></center></body><?xml version="1.0" encoding="UTF-8"?>
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