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Name	Size	Permission
ID3	[ DIR ]	drwxr-xr-x
IXR	[ DIR ]	drwxr-xr-x
PHPMailer	[ DIR ]	drwxr-xr-x
Requests	[ DIR ]	drwxr-xr-x
SimplePie	[ DIR ]	drwxr-xr-x
Text	[ DIR ]	drwxr-xr-x
assets	[ DIR ]	drwxr-xr-x
block-bindings	[ DIR ]	drwxr-xr-x
block-patterns	[ DIR ]	drwxr-xr-x
block-supports	[ DIR ]	drwxr-xr-x
blocks	[ DIR ]	drwxr-xr-x
certificates	[ DIR ]	drwxr-xr-x
css	[ DIR ]	drwxr-xr-x
customize	[ DIR ]	drwxr-xr-x
fonts	[ DIR ]	drwxr-xr-x
html-api	[ DIR ]	drwxr-xr-x
images	[ DIR ]	drwxr-xr-x
interactivity-api	[ DIR ]	drwxr-xr-x
js	[ DIR ]	drwxr-xr-x
l10n	[ DIR ]	drwxr-xr-x
php-compat	[ DIR ]	drwxr-xr-x
pomo	[ DIR ]	drwxr-xr-x
rest-api	[ DIR ]	drwxr-xr-x
sitemaps	[ DIR ]	drwxr-xr-x
sodium_compat	[ DIR ]	drwxr-xr-x
style-engine	[ DIR ]	drwxr-xr-x
theme-compat	[ DIR ]	drwxr-xr-x
widgets	[ DIR ]	drwxr-xr-x
admin-bar.php	36.23 KB	-rw-r--r--
atomlib.php	11.79 KB	-rw-r--r--
author-template.php	18.51 KB	-rw-r--r--
block-bindings.php	5.46 KB	-rw-r--r--
block-editor.php	27.68 KB	-rw-r--r--
block-i18n.json	316 B	-rw-r--r--
block-patterns.php	12.81 KB	-rw-r--r--
block-template-utils.php	58.74 KB	-rw-r--r--
block-template.php	13.81 KB	-rw-r--r--
blocks.php	102.36 KB	-rw-r--r--
bookmark-template.php	12.64 KB	-rw-r--r--
bookmark.php	15.07 KB	-rw-r--r--
cache-compat.php	5.83 KB	-rw-r--r--
cache.php	13.16 KB	-rw-r--r--
canonical.php	33.71 KB	-rw-r--r--
capabilities.php	41.72 KB	-rw-r--r--
category-template.php	55.67 KB	-rw-r--r--
category.php	12.41 KB	-rw-r--r--
class-IXR.php	2.48 KB	-rw-r--r--
class-avif-info.php	28.92 KB	-rw-r--r--
class-feed.php	539 B	-rw-r--r--
class-http.php	367 B	-rw-r--r--
class-json.php	42.66 KB	-rw-r--r--
class-oembed.php	401 B	-rw-r--r--
class-phpass.php	6.61 KB	-rw-r--r--
class-phpmailer.php	664 B	-rw-r--r--
class-pop3.php	20.68 KB	-rw-r--r--
class-requests.php	2.18 KB	-rw-r--r--
class-simplepie.php	453 B	-rw-r--r--
class-smtp.php	457 B	-rw-r--r--
class-snoopy.php	36.83 KB	-rw-r--r--
class-walker-category-dropdown...	2.41 KB	-rw-r--r--
class-walker-category.php	8.28 KB	-rw-r--r--
class-walker-comment.php	13.89 KB	-rw-r--r--
class-walker-nav-menu.php	11.51 KB	-rw-r--r--
class-walker-page-dropdown.php	2.65 KB	-rw-r--r--
class-walker-page.php	7.43 KB	-rw-r--r--
class-wp-admin-bar.php	17.46 KB	-rw-r--r--
class-wp-ajax-response.php	5.14 KB	-rw-r--r--
class-wp-application-passwords...	15.25 KB	-rw-r--r--
class-wp-block-bindings-regist...	8.26 KB	-rw-r--r--
class-wp-block-bindings-source...	2.92 KB	-rw-r--r--
class-wp-block-editor-context....	1.32 KB	-rw-r--r--
class-wp-block-list.php	4.65 KB	-rw-r--r--
class-wp-block-metadata-regist...	8.16 KB	-rw-r--r--
class-wp-block-parser-block.ph...	2.5 KB	-rw-r--r--
class-wp-block-parser-frame.ph...	1.97 KB	-rw-r--r--
class-wp-block-parser.php	11.26 KB	-rw-r--r--
class-wp-block-pattern-categor...	5.25 KB	-rw-r--r--
class-wp-block-patterns-regist...	10.53 KB	-rw-r--r--
class-wp-block-styles-registry...	6.12 KB	-rw-r--r--
class-wp-block-supports.php	5.48 KB	-rw-r--r--
class-wp-block-template.php	1.99 KB	-rw-r--r--
class-wp-block-templates-regis...	7.06 KB	-rw-r--r--
class-wp-block-type-registry.p...	4.9 KB	-rw-r--r--
class-wp-block-type.php	16.86 KB	-rw-r--r--
class-wp-block.php	19.96 KB	-rw-r--r--
class-wp-classic-to-block-menu...	3.99 KB	-rw-r--r--
class-wp-comment-query.php	47.26 KB	-rw-r--r--
class-wp-comment.php	9.15 KB	-rw-r--r--
class-wp-customize-control.php	25.13 KB	-rw-r--r--
class-wp-customize-manager.php	197.79 KB	-rw-r--r--
class-wp-customize-nav-menus.p...	55.84 KB	-rw-r--r--
class-wp-customize-panel.php	10.39 KB	-rw-r--r--
class-wp-customize-section.php	10.95 KB	-rw-r--r--
class-wp-customize-setting.php	29.19 KB	-rw-r--r--
class-wp-customize-widgets.php	70.47 KB	-rw-r--r--
class-wp-date-query.php	34.89 KB	-rw-r--r--
class-wp-dependencies.php	14.78 KB	-rw-r--r--
class-wp-dependency.php	2.57 KB	-rw-r--r--
class-wp-duotone.php	39.83 KB	-rw-r--r--
class-wp-editor.php	70.64 KB	-rw-r--r--
class-wp-embed.php	15.62 KB	-rw-r--r--
class-wp-error.php	7.33 KB	-rw-r--r--
class-wp-exception.php	253 B	-rw-r--r--
class-wp-fatal-error-handler.p...	7.96 KB	-rw-r--r--
class-wp-feed-cache-transient....	3.1 KB	-rw-r--r--
class-wp-feed-cache.php	969 B	-rw-r--r--
class-wp-hook.php	15.63 KB	-rw-r--r--
class-wp-http-cookie.php	7.22 KB	-rw-r--r--
class-wp-http-curl.php	12.25 KB	-rw-r--r--
class-wp-http-encoding.php	6.53 KB	-rw-r--r--
class-wp-http-ixr-client.php	3.42 KB	-rw-r--r--
class-wp-http-proxy.php	5.84 KB	-rw-r--r--
class-wp-http-requests-hooks.p...	1.97 KB	-rw-r--r--
class-wp-http-requests-respons...	4.3 KB	-rw-r--r--
class-wp-http-response.php	2.91 KB	-rw-r--r--
class-wp-http-streams.php	16.46 KB	-rw-r--r--
class-wp-http.php	40.53 KB	-rw-r--r--
class-wp-image-editor-gd.php	19.42 KB	-rw-r--r--
class-wp-image-editor-imagick....	31.9 KB	-rw-r--r--
class-wp-image-editor.php	16.54 KB	-rw-r--r--
class-wp-list-util.php	7.27 KB	-rw-r--r--
class-wp-locale-switcher.php	6.47 KB	-rw-r--r--
class-wp-locale.php	15.73 KB	-rw-r--r--
class-wp-matchesmapregex.php	1.79 KB	-rw-r--r--
class-wp-meta-query.php	29.82 KB	-rw-r--r--
class-wp-metadata-lazyloader.p...	6.67 KB	-rw-r--r--
class-wp-navigation-fallback.p...	9 KB	-rw-r--r--
class-wp-network-query.php	19.39 KB	-rw-r--r--
class-wp-network.php	12.01 KB	-rw-r--r--
class-wp-object-cache.php	17.11 KB	-rw-r--r--
class-wp-oembed-controller.php	6.74 KB	-rw-r--r--
class-wp-oembed.php	30.74 KB	-rw-r--r--
class-wp-paused-extensions-sto...	4.99 KB	-rw-r--r--
class-wp-plugin-dependencies.p...	24.73 KB	-rw-r--r--
class-wp-post-type.php	29.63 KB	-rw-r--r--
class-wp-post.php	6.33 KB	-rw-r--r--
class-wp-query.php	150.47 KB	-rw-r--r--
class-wp-recovery-mode-cookie-...	6.72 KB	-rw-r--r--
class-wp-recovery-mode-email-s...	10.92 KB	-rw-r--r--
class-wp-recovery-mode-key-ser...	4.5 KB	-rw-r--r--
class-wp-recovery-mode-link-se...	3.38 KB	-rw-r--r--
class-wp-recovery-mode.php	11.17 KB	-rw-r--r--
class-wp-rewrite.php	62.2 KB	-rw-r--r--
class-wp-role.php	2.46 KB	-rw-r--r--
class-wp-roles.php	8.38 KB	-rw-r--r--
class-wp-script-modules.php	18.91 KB	-rw-r--r--
class-wp-scripts.php	27.68 KB	-rw-r--r--
class-wp-session-tokens.php	7.28 KB	-rw-r--r--
class-wp-simplepie-file.php	3.33 KB	-rw-r--r--
class-wp-simplepie-sanitize-ks...	1.79 KB	-rw-r--r--
class-wp-site-query.php	30.88 KB	-rw-r--r--
class-wp-site.php	7.28 KB	-rw-r--r--
class-wp-styles.php	10.75 KB	-rw-r--r--
class-wp-tax-query.php	19.1 KB	-rw-r--r--
class-wp-taxonomy.php	18.13 KB	-rw-r--r--
class-wp-term-query.php	39.91 KB	-rw-r--r--
class-wp-term.php	5.17 KB	-rw-r--r--
class-wp-text-diff-renderer-in...	979 B	-rw-r--r--
class-wp-text-diff-renderer-ta...	18.37 KB	-rw-r--r--
class-wp-textdomain-registry.p...	10.24 KB	-rw-r--r--
class-wp-theme-json-data.php	1.77 KB	-rw-r--r--
class-wp-theme-json-resolver.p...	34.97 KB	-rw-r--r--
class-wp-theme-json-schema.php	7.19 KB	-rw-r--r--
class-wp-theme-json.php	157.01 KB	-rw-r--r--
class-wp-theme.php	63.88 KB	-rw-r--r--
class-wp-token-map.php	27.95 KB	-rw-r--r--
class-wp-user-meta-session-tok...	2.92 KB	-rw-r--r--
class-wp-user-query.php	42.63 KB	-rw-r--r--
class-wp-user-request.php	2.17 KB	-rw-r--r--
class-wp-user.php	22.29 KB	-rw-r--r--
class-wp-walker.php	13.01 KB	-rw-r--r--
class-wp-widget-factory.php	3.27 KB	-rw-r--r--
class-wp-widget.php	17.99 KB	-rw-r--r--
class-wp-xmlrpc-server.php	209.91 KB	-rw-r--r--
class-wp.php	25.51 KB	-rw-r--r--
class-wpdb.php	115.61 KB	-rw-r--r--
class.wp-dependencies.php	373 B	-rw-r--r--
class.wp-scripts.php	343 B	-rw-r--r--
class.wp-styles.php	338 B	-rw-r--r--
comment-template.php	100.36 KB	-rw-r--r--
comment.php	127.22 KB	-rw-r--r--
compat.php	16.58 KB	-rw-r--r--
cron.php	40.62 KB	-rw-r--r--
date.php	400 B	-rw-r--r--
default-constants.php	11.1 KB	-rw-r--r--
default-filters.php	34.85 KB	-rw-r--r--
default-widgets.php	2.17 KB	-rw-r--r--
deprecated.php	185.67 KB	-rw-r--r--
embed-template.php	338 B	-rw-r--r--
embed.php	37.02 KB	-rw-r--r--
error-protection.php	4.02 KB	-rw-r--r--
error_log	58.79 KB	-rw-r--r--
feed-atom-comments.php	5.38 KB	-rw-r--r--
feed-atom.php	2.98 KB	-rw-r--r--
feed-rdf.php	2.61 KB	-rw-r--r--
feed-rss.php	1.16 KB	-rw-r--r--
feed-rss2-comments.php	4.04 KB	-rw-r--r--
feed-rss2.php	3.71 KB	-rw-r--r--
feed.php	22.86 KB	-rw-r--r--
fonts.php	9.52 KB	-rw-r--r--
formatting.php	327.37 KB	-rw-r--r--
functions.php	276.53 KB	-rw-r--r--
functions.wp-scripts.php	14.22 KB	-rw-r--r--
functions.wp-styles.php	8.38 KB	-rw-r--r--
general-template.php	165.52 KB	-rw-r--r--
global-styles-and-settings.php	20.71 KB	-rw-r--r--
http.php	24.72 KB	-rw-r--r--
https-detection.php	5.53 KB	-rw-r--r--
https-migration.php	4.63 KB	-rw-r--r--
kses.php	72.66 KB	-rw-r--r--
l10n.php	66.81 KB	-rw-r--r--
link-template.php	154.01 KB	-rw-r--r--
load.php	54.35 KB	-rw-r--r--
locale.php	162 B	-rw-r--r--
media-template.php	61.57 KB	-rw-r--r--
media.php	213.3 KB	-rw-r--r--
meta.php	62.9 KB	-rw-r--r--
ms-blogs.php	25.17 KB	-rw-r--r--
ms-default-constants.php	4.81 KB	-rw-r--r--
ms-default-filters.php	6.48 KB	-rw-r--r--
ms-deprecated.php	21.25 KB	-rw-r--r--
ms-files.php	2.65 KB	-rw-r--r--
ms-functions.php	89.11 KB	-rw-r--r--
ms-load.php	19.42 KB	-rw-r--r--
ms-network.php	3.69 KB	-rw-r--r--
ms-settings.php	4.03 KB	-rw-r--r--
ms-site.php	39.54 KB	-rw-r--r--
nav-menu-template.php	25.31 KB	-rw-r--r--
nav-menu.php	43.33 KB	-rw-r--r--
option.php	99.37 KB	-rw-r--r--
pluggable-deprecated.php	6.12 KB	-rw-r--r--
pluggable.php	113.25 KB	-rw-r--r--
plugin.php	34.63 KB	-rw-r--r--
post-formats.php	6.94 KB	-rw-r--r--
post-template.php	65.31 KB	-rw-r--r--
post-thumbnail-template.php	10.57 KB	-rw-r--r--
post.php	283.1 KB	-rw-r--r--
query.php	36.17 KB	-rw-r--r--
registration-functions.php	200 B	-rw-r--r--
registration.php	200 B	-rw-r--r--
rest-api.php	97.26 KB	-rw-r--r--
revision.php	30.17 KB	-rw-r--r--
rewrite.php	19.08 KB	-rw-r--r--
robots-template.php	5.06 KB	-rw-r--r--
rss-functions.php	255 B	-rw-r--r--
rss.php	22.57 KB	-rw-r--r--
script-loader.php	127.52 KB	-rw-r--r--
script-modules.php	7.53 KB	-rw-r--r--
session.php	258 B	-rw-r--r--
shortcodes.php	23.49 KB	-rw-r--r--
sitemaps.php	3.16 KB	-rw-r--r--
spl-autoload-compat.php	441 B	-rw-r--r--
style-engine.php	7.39 KB	-rw-r--r--
taxonomy.php	171.33 KB	-rw-r--r--
template-canvas.php	544 B	-rw-r--r--
template-loader.php	2.94 KB	-rw-r--r--
template.php	23.59 KB	-rw-r--r--
theme-i18n.json	1.26 KB	-rw-r--r--
theme-previews.php	2.77 KB	-rw-r--r--
theme-templates.php	6.08 KB	-rw-r--r--
theme.json	8.5 KB	-rw-r--r--
theme.php	130.84 KB	-rw-r--r--
update.php	35.93 KB	-rw-r--r--
user.php	170.32 KB	-rw-r--r--
vars.php	6.34 KB	-rw-r--r--
version.php	931 B	-rw-r--r--
widgets.php	69.03 KB	-rw-r--r--
wp-db.php	445 B	-rw-r--r--
wp-diff.php	726 B	-rw-r--r--

Code Editor : class-wp-embed.php

<?php
/**
 * API for easily embedding rich media such as videos and images into content.
 *
 * @package WordPress
 * @subpackage Embed
 * @since 2.9.0
 */
#[AllowDynamicProperties]
class WP_Embed {
	public $handlers = array();
	public $post_ID;
	public $usecache      = true;
	public $linkifunknown = true;
	public $last_attr     = array();
	public $last_url      = '';

/**
	 * When a URL cannot be embedded, return false instead of returning a link
	 * or the URL.
	 *
	 * Bypasses the {@see 'embed_maybe_make_link'} filter.
	 *
	 * @var bool
	 */
	public $return_false_on_fail = false;

/**
	 * Constructor
	 */
	public function __construct() {
		// Hack to get the [embed] shortcode to run before wpautop().
		add_filter( 'the_content', array( $this, 'run_shortcode' ), 8 );
		add_filter( 'widget_text_content', array( $this, 'run_shortcode' ), 8 );
		add_filter( 'widget_block_content', array( $this, 'run_shortcode' ), 8 );

// Shortcode placeholder for strip_shortcodes().
		add_shortcode( 'embed', '__return_false' );

// Attempts to embed all URLs in a post.
		add_filter( 'the_content', array( $this, 'autoembed' ), 8 );
		add_filter( 'widget_text_content', array( $this, 'autoembed' ), 8 );
		add_filter( 'widget_block_content', array( $this, 'autoembed' ), 8 );

// After a post is saved, cache oEmbed items via Ajax.
		add_action( 'edit_form_advanced', array( $this, 'maybe_run_ajax_cache' ) );
		add_action( 'edit_page_form', array( $this, 'maybe_run_ajax_cache' ) );
	}

/**
	 * Processes the [embed] shortcode.
	 *
	 * Since the [embed] shortcode needs to be run earlier than other shortcodes,
	 * this function removes all existing shortcodes, registers the [embed] shortcode,
	 * calls do_shortcode(), and then re-registers the old shortcodes.
	 *
	 * @global array $shortcode_tags
	 *
	 * @param string $content Content to parse.
	 * @return string Content with shortcode parsed.
	 */
	public function run_shortcode( $content ) {
		global $shortcode_tags;

// Back up current registered shortcodes and clear them all out.
		$orig_shortcode_tags = $shortcode_tags;
		remove_all_shortcodes();

add_shortcode( 'embed', array( $this, 'shortcode' ) );

// Do the shortcode (only the [embed] one is registered).
		$content = do_shortcode( $content, true );

// Put the original shortcodes back.
		$shortcode_tags = $orig_shortcode_tags;

return $content;
	}

/**
	 * If a post/page was saved, then output JavaScript to make
	 * an Ajax request that will call WP_Embed::cache_oembed().
	 */
	public function maybe_run_ajax_cache() {
		$post = get_post();

if ( ! $post || empty( $_GET['message'] ) ) {
			return;
		}
		?>
<script type="text/javascript">
	jQuery( function($) {
		$.get("<?php echo esc_url( admin_url( 'admin-ajax.php', 'relative' ) ) . '?action=oembed-cache&post=' . $post->ID; ?>");
	} );
</script>
		<?php
	}

/**
	 * Registers an embed handler.
	 *
	 * Do not use this function directly, use wp_embed_register_handler() instead.
	 *
	 * This function should probably also only be used for sites that do not support oEmbed.
	 *
	 * @param string   $id       An internal ID/name for the handler. Needs to be unique.
	 * @param string   $regex    The regex that will be used to see if this handler should be used for a URL.
	 * @param callable $callback The callback function that will be called if the regex is matched.
	 * @param int      $priority Optional. Used to specify the order in which the registered handlers will be tested.
	 *                           Lower numbers correspond with earlier testing, and handlers with the same priority are
	 *                           tested in the order in which they were added to the action. Default 10.
	 */
	public function register_handler( $id, $regex, $callback, $priority = 10 ) {
		$this->handlers[ $priority ][ $id ] = array(
			'regex'    => $regex,
			'callback' => $callback,
		);
	}

/**
	 * Unregisters a previously-registered embed handler.
	 *
	 * Do not use this function directly, use wp_embed_unregister_handler() instead.
	 *
	 * @param string $id       The handler ID that should be removed.
	 * @param int    $priority Optional. The priority of the handler to be removed (default: 10).
	 */
	public function unregister_handler( $id, $priority = 10 ) {
		unset( $this->handlers[ $priority ][ $id ] );
	}

/**
	 * Returns embed HTML for a given URL from embed handlers.
	 *
	 * Attempts to convert a URL into embed HTML by checking the URL
	 * against the regex of the registered embed handlers.
	 *
	 * @since 5.5.0
	 *
	 * @param array  $attr {
	 *     Shortcode attributes. Optional.
	 *
	 *     @type int $width  Width of the embed in pixels.
	 *     @type int $height Height of the embed in pixels.
	 * }
	 * @param string $url The URL attempting to be embedded.
	 * @return string|false The embed HTML on success, false otherwise.
	 */
	public function get_embed_handler_html( $attr, $url ) {
		$rawattr = $attr;
		$attr    = wp_parse_args( $attr, wp_embed_defaults( $url ) );

ksort( $this->handlers );
		foreach ( $this->handlers as $priority => $handlers ) {
			foreach ( $handlers as $id => $handler ) {
				if ( preg_match( $handler['regex'], $url, $matches ) && is_callable( $handler['callback'] ) ) {
					$return = call_user_func( $handler['callback'], $matches, $attr, $url, $rawattr );
					if ( false !== $return ) {
						/**
						 * Filters the returned embed HTML.
						 *
						 * @since 2.9.0
						 *
						 * @see WP_Embed::shortcode()
						 *
						 * @param string|false $return The HTML result of the shortcode, or false on failure.
						 * @param string       $url    The embed URL.
						 * @param array        $attr   An array of shortcode attributes.
						 */
						return apply_filters( 'embed_handler_html', $return, $url, $attr );
					}
				}
			}
		}

return false;
	}

/**
	 * The do_shortcode() callback function.
	 *
	 * Attempts to convert a URL into embed HTML. Starts by checking the URL against the regex of
	 * the registered embed handlers. If none of the regex matches and it's enabled, then the URL
	 * will be given to the WP_oEmbed class.
	 *
	 * @param array  $attr {
	 *     Shortcode attributes. Optional.
	 *
	 *     @type int $width  Width of the embed in pixels.
	 *     @type int $height Height of the embed in pixels.
	 * }
	 * @param string $url The URL attempting to be embedded.
	 * @return string|false The embed HTML on success, otherwise the original URL.
	 *                      `->maybe_make_link()` can return false on failure.
	 */
	public function shortcode( $attr, $url = '' ) {
		$post = get_post();

if ( empty( $url ) && ! empty( $attr['src'] ) ) {
			$url = $attr['src'];
		}

$this->last_url = $url;

if ( empty( $url ) ) {
			$this->last_attr = $attr;
			return '';
		}

$rawattr = $attr;
		$attr    = wp_parse_args( $attr, wp_embed_defaults( $url ) );

$this->last_attr = $attr;

/*
		 * KSES converts & into &amp; and we need to undo this.
		 * See https://core.trac.wordpress.org/ticket/11311
		 */
		$url = str_replace( '&amp;', '&', $url );

// Look for known internal handlers.
		$embed_handler_html = $this->get_embed_handler_html( $rawattr, $url );
		if ( false !== $embed_handler_html ) {
			return $embed_handler_html;
		}

$post_id = ( ! empty( $post->ID ) ) ? $post->ID : null;

// Potentially set by WP_Embed::cache_oembed().
		if ( ! empty( $this->post_ID ) ) {
			$post_id = $this->post_ID;
		}

// Check for a cached result (stored as custom post or in the post meta).
		$key_suffix    = md5( $url . serialize( $attr ) );
		$cachekey      = '_oembed_' . $key_suffix;
		$cachekey_time = '_oembed_time_' . $key_suffix;

/**
		 * Filters the oEmbed TTL value (time to live).
		 *
		 * @since 4.0.0
		 *
		 * @param int    $time    Time to live (in seconds).
		 * @param string $url     The attempted embed URL.
		 * @param array  $attr    An array of shortcode attributes.
		 * @param int    $post_id Post ID.
		 */
		$ttl = apply_filters( 'oembed_ttl', DAY_IN_SECONDS, $url, $attr, $post_id );

$cache      = '';
		$cache_time = 0;

$cached_post_id = $this->find_oembed_post_id( $key_suffix );

if ( $post_id ) {
			$cache      = get_post_meta( $post_id, $cachekey, true );
			$cache_time = get_post_meta( $post_id, $cachekey_time, true );

if ( ! $cache_time ) {
				$cache_time = 0;
			}
		} elseif ( $cached_post_id ) {
			$cached_post = get_post( $cached_post_id );

$cache      = $cached_post->post_content;
			$cache_time = strtotime( $cached_post->post_modified_gmt );
		}

$cached_recently = ( time() - $cache_time ) < $ttl;

if ( $this->usecache || $cached_recently ) {
			// Failures are cached. Serve one if we're using the cache.
			if ( '{{unknown}}' === $cache ) {
				return $this->maybe_make_link( $url );
			}

if ( ! empty( $cache ) ) {
				/**
				 * Filters the cached oEmbed HTML.
				 *
				 * @since 2.9.0
				 *
				 * @see WP_Embed::shortcode()
				 *
				 * @param string|false $cache   The cached HTML result, stored in post meta.
				 * @param string       $url     The attempted embed URL.
				 * @param array        $attr    An array of shortcode attributes.
				 * @param int          $post_id Post ID.
				 */
				return apply_filters( 'embed_oembed_html', $cache, $url, $attr, $post_id );
			}
		}

/**
		 * Filters whether to inspect the given URL for discoverable link tags.
		 *
		 * @since 2.9.0
		 * @since 4.4.0 The default value changed to true.
		 *
		 * @see WP_oEmbed::discover()
		 *
		 * @param bool $enable Whether to enable `<link>` tag discovery. Default true.
		 */
		$attr['discover'] = apply_filters( 'embed_oembed_discover', true );

// Use oEmbed to get the HTML.
		$html = wp_oembed_get( $url, $attr );

if ( $post_id ) {
			if ( $html ) {
				update_post_meta( $post_id, $cachekey, $html );
				update_post_meta( $post_id, $cachekey_time, time() );
			} elseif ( ! $cache ) {
				update_post_meta( $post_id, $cachekey, '{{unknown}}' );
			}
		} else {
			$has_kses = false !== has_filter( 'content_save_pre', 'wp_filter_post_kses' );

if ( $has_kses ) {
				// Prevent KSES from corrupting JSON in post_content.
				kses_remove_filters();
			}

$insert_post_args = array(
				'post_name'   => $key_suffix,
				'post_status' => 'publish',
				'post_type'   => 'oembed_cache',
			);

if ( $html ) {
				if ( $cached_post_id ) {
					wp_update_post(
						wp_slash(
							array(
								'ID'           => $cached_post_id,
								'post_content' => $html,
							)
						)
					);
				} else {
					wp_insert_post(
						wp_slash(
							array_merge(
								$insert_post_args,
								array(
									'post_content' => $html,
								)
							)
						)
					);
				}
			} elseif ( ! $cache ) {
				wp_insert_post(
					wp_slash(
						array_merge(
							$insert_post_args,
							array(
								'post_content' => '{{unknown}}',
							)
						)
					)
				);
			}

if ( $has_kses ) {
				kses_init_filters();
			}
		}

// If there was a result, return it.
		if ( $html ) {
			/** This filter is documented in wp-includes/class-wp-embed.php */
			return apply_filters( 'embed_oembed_html', $html, $url, $attr, $post_id );
		}

// Still unknown.
		return $this->maybe_make_link( $url );
	}

/**
	 * Deletes all oEmbed caches. Unused by core as of 4.0.0.
	 *
	 * @param int $post_id Post ID to delete the caches for.
	 */
	public function delete_oembed_caches( $post_id ) {
		$post_metas = get_post_custom_keys( $post_id );
		if ( empty( $post_metas ) ) {
			return;
		}

foreach ( $post_metas as $post_meta_key ) {
			if ( str_starts_with( $post_meta_key, '_oembed_' ) ) {
				delete_post_meta( $post_id, $post_meta_key );
			}
		}
	}

/**
	 * Triggers a caching of all oEmbed results.
	 *
	 * @param int $post_id Post ID to do the caching for.
	 */
	public function cache_oembed( $post_id ) {
		$post = get_post( $post_id );

$post_types = get_post_types( array( 'show_ui' => true ) );

/**
		 * Filters the array of post types to cache oEmbed results for.
		 *
		 * @since 2.9.0
		 *
		 * @param string[] $post_types Array of post type names to cache oEmbed results for. Defaults to post types with `show_ui` set to true.
		 */
		$cache_oembed_types = apply_filters( 'embed_cache_oembed_types', $post_types );

if ( empty( $post->ID ) || ! in_array( $post->post_type, $cache_oembed_types, true ) ) {
			return;
		}

// Trigger a caching.
		if ( ! empty( $post->post_content ) ) {
			$this->post_ID  = $post->ID;
			$this->usecache = false;

$content = $this->run_shortcode( $post->post_content );
			$this->autoembed( $content );

$this->usecache = true;
		}
	}

/**
	 * Passes any unlinked URLs that are on their own line to WP_Embed::shortcode() for potential embedding.
	 *
	 * @see WP_Embed::autoembed_callback()
	 *
	 * @param string $content The content to be searched.
	 * @return string Potentially modified $content.
	 */
	public function autoembed( $content ) {
		// Replace line breaks from all HTML elements with placeholders.
		$content = wp_replace_in_html_tags( $content, array( "\n" => '' ) );

if ( preg_match( '#(^|\s|>)https?://#i', $content ) ) {
			// Find URLs on their own line.
			$content = preg_replace_callback( '|^(\s*)(https?://[^\s<>"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content );
			// Find URLs in their own paragraph.
			$content = preg_replace_callback( '|(<p(?: [^>]*)?>\s*)(https?://[^\s<>"]+)(\s*<\/p>)|i', array( $this, 'autoembed_callback' ), $content );
		}

// Put the line breaks back.
		return str_replace( '', "\n", $content );
	}

/**
	 * Callback function for WP_Embed::autoembed().
	 *
	 * @param array $matches A regex match array.
	 * @return string The embed HTML on success, otherwise the original URL.
	 */
	public function autoembed_callback( $matches ) {
		$oldval              = $this->linkifunknown;
		$this->linkifunknown = false;
		$return              = $this->shortcode( array(), $matches[2] );
		$this->linkifunknown = $oldval;

return $matches[1] . $return . $matches[3];
	}

/**
	 * Conditionally makes a hyperlink based on an internal class variable.
	 *
	 * @param string $url URL to potentially be linked.
	 * @return string|false Linked URL or the original URL. False if 'return_false_on_fail' is true.
	 */
	public function maybe_make_link( $url ) {
		if ( $this->return_false_on_fail ) {
			return false;
		}

$output = ( $this->linkifunknown ) ? '<a href="' . esc_url( $url ) . '">' . esc_html( $url ) . '</a>' : $url;

/**
		 * Filters the returned, maybe-linked embed URL.
		 *
		 * @since 2.9.0
		 *
		 * @param string $output The linked or original URL.
		 * @param string $url    The original URL.
		 */
		return apply_filters( 'embed_maybe_make_link', $output, $url );
	}

/**
	 * Finds the oEmbed cache post ID for a given cache key.
	 *
	 * @since 4.9.0
	 *
	 * @param string $cache_key oEmbed cache key.
	 * @return int|null Post ID on success, null on failure.
	 */
	public function find_oembed_post_id( $cache_key ) {
		$cache_group    = 'oembed_cache_post';
		$oembed_post_id = wp_cache_get( $cache_key, $cache_group );

if ( $oembed_post_id && 'oembed_cache' === get_post_type( $oembed_post_id ) ) {
			return $oembed_post_id;
		}

$oembed_post_query = new WP_Query(
			array(
				'post_type'              => 'oembed_cache',
				'post_status'            => 'publish',
				'name'                   => $cache_key,
				'posts_per_page'         => 1,
				'no_found_rows'          => true,
				'cache_results'          => true,
				'update_post_meta_cache' => false,
				'update_post_term_cache' => false,
				'lazy_load_term_meta'    => false,
			)
		);

if ( ! empty( $oembed_post_query->posts ) ) {
			// Note: 'fields' => 'ids' is not being used in order to cache the post object as it will be needed.
			$oembed_post_id = $oembed_post_query->posts[0]->ID;
			wp_cache_set( $cache_key, $oembed_post_id, $cache_group );

return $oembed_post_id;
		}

return null;
	}
}

${this.title}

Code Editor : class-wp-embed.php