WordPressを読む　64 /blog/wp-includes/class-wp-embed.php

2014/12/04 2015/02/28

1 /blog/wp-includes/class-wp-embed.php
2 クラス　WP_Embed::
3 クラス　WP_Embed::__construct()
4 クラス　WP_Embed::run_shortcode()
5 クラス　WP_Embed::maybe_run_ajax_cache()
6 クラス　WP_Embed::register_handler()
7 クラス　WP_Embed::unregister_handler()
8 クラス　WP_Embed::shortcode()
9 クラス　WP_Embed::delete_oembed_caches()
10 クラス　WP_Embed::cache_oembed()
11 クラス　WP_Embed::autoembed()
12 クラス　WP_Embed::autoembed_callback()
13 クラス　WP_Embed::maybe_make_link()

/blog/wp-includes/class-wp-embed.php

クラス　WP_Embed::

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

	/**
	 * When an URL cannot be embedded, return false instead of returning a link
	 * or the URL. Bypasses the 'embed_maybe_make_link' filter.
	 */
	public $return_false_on_fail = false;

<?php

/**

* API for easily embedding rich media such as videos and images into content.

* @package WordPress

* @subpackage Embed

* @since 2.9.0

class WP_Embed {

public $handlers = array();

public $post_ID;

public $usecache = true;

public $linkifunknown = true;

/**

* When an URL cannot be embedded, return false instead of returning a link

* or the URL. Bypasses the 'embed_maybe_make_link' filter.

public $return_false_on_fail = false;

クラス　WP_Embed::__construct()

	/**
	 * Constructor
	 */
	public function __construct() {
		// Hack to get the [embed] shortcode to run before wpautop()
		add_filter( 'the_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 );

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

/**

* Constructor

public function __construct() {

// Hack to get the [embed] shortcode to run before wpautop()

add_filter( 'the_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 );

// After a post is saved, cache oEmbed items via AJAX

add_action( 'edit_form_advanced', array( $this, 'maybe_run_ajax_cache' ) );

}

クラス　WP_Embed::run_shortcode()

	/**
	 * Process 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 {@link do_shortcode()}, and then re-registers the old shortcodes.
	 *
	 * @uses $shortcode_tags
	 * @uses remove_all_shortcodes()
	 * @uses add_shortcode()
	 * @uses do_shortcode()
	 *
	 * @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 );

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

		return $content;
	}

/**

* Process 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 {@link do_shortcode()}, and then re-registers the old shortcodes.

* @uses $shortcode_tags

* @uses remove_all_shortcodes()

* @uses add_shortcode()

* @uses do_shortcode()

* @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 );

// Put the original shortcodes back

$shortcode_tags = $orig_shortcode_tags;

return $content;

}

クラス　WP_Embed::maybe_run_ajax_cache()

	/**
	 * 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">
/* <![CDATA[ */
	jQuery(document).ready(function($){
		$.get("<?php echo admin_url( 'admin-ajax.php?action=oembed-cache&post=' . $post->ID, 'relative' ); ?>");
	});
/* ]]> */
</script>
<?php
	}

/**

* 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;

/* <![CDATA[ */

jQuery(document).ready(function($){

$.get("<?php echo admin_url( 'admin-ajax.php?action=oembed-cache&post=' . $post->ID, 'relative' ); ?>");

});

/* ]]> */

</script>

<?php

}

クラス　WP_Embed::register_handler()

	/**
	 * Register an embed handler. Do not use this function directly, use {@link 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 callback $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 (default: 10). 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.
	 */
	public function register_handler( $id, $regex, $callback, $priority = 10 ) {
		$this->handlers[$priority][$id] = array(
			'regex'    => $regex,
			'callback' => $callback,
		);
	}

/**

* Register an embed handler. Do not use this function directly, use {@link 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 callback $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 (default: 10). 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.

public function register_handler( $id, $regex, $callback, $priority = 10 ) {

$this->handlers[$priority][$id] = array(

'regex' => $regex,

'callback' => $callback,

);

}

クラス　WP_Embed::unregister_handler()

	/**
	 * Unregister a previously registered embed handler. Do not use this function directly, use {@link 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, $priority = 10 ) {
		if ( isset($this->handlers[$priority][$id]) )
			unset($this->handlers[$priority][$id]);
	}

/**

* Unregister a previously registered embed handler. Do not use this function directly, use {@link 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 ) {

if ( isset($this->handlers[$priority][$id]) )

unset($this->handlers[$priority][$id]);

}

クラス　WP_Embed::shortcode()

	/**
	 * The {@link 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 {@link WP_oEmbed} class.
	 *
	 * @uses wp_oembed_get()
	 * @uses wp_parse_args()
	 * @uses wp_embed_defaults()
	 * @uses WP_Embed::maybe_make_link()
	 * @uses get_option()
	 * @uses author_can()
	 * @uses wp_cache_get()
	 * @uses wp_cache_set()
	 * @uses get_post_meta()
	 * @uses update_post_meta()
	 *
	 * @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 The embed HTML on success, otherwise the original URL.
	 */
	public function shortcode( $attr, $url = '' ) {
		$post = get_post();

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

		if ( empty( $url ) )
			return '';

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

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

		// Look for known internal handlers
		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'] ) ) {
					if ( false !== $return = call_user_func( $handler['callback'], $matches, $attr, $url, $rawattr ) )
						/**
						 * Filter the returned embed handler.
						 *
						 * @since 2.9.0
						 *
						 * @see WP_Embed::shortcode()
						 *
						 * @param mixed  $return The shortcode callback function to call.
						 * @param string $url    The attempted embed URL.
						 * @param array  $attr   An array of shortcode attributes.
						 */
						return apply_filters( 'embed_handler_html', $return, $url, $attr );
				}
			}
		}

		$post_ID = ( ! empty( $post->ID ) ) ? $post->ID : null;
		if ( ! empty( $this->post_ID ) ) // Potentially set by WP_Embed::cache_oembed()
			$post_ID = $this->post_ID;

		// Unknown URL format. Let oEmbed have a go.
		if ( $post_ID ) {

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

			/**
			 * Filter 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 = get_post_meta( $post_ID, $cachekey, true );
			$cache_time = get_post_meta( $post_ID, $cachekey_time, true );

			if ( ! $cache_time ) {
				$cache_time = 0;
			}

			$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 ) ) {
					/**
					 * Filter the cached oEmbed HTML.
					 *
					 * @since 2.9.0
					 *
					 * @see WP_Embed::shortcode()
					 *
					 * @param mixed  $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 );
				}
			}

			/**
			 * Filter whether to inspect the given URL for discoverable <link> tags.
			 *
			 * @since 2.9.0
			 *
			 * @see WP_oEmbed::discover()
			 *
			 * @param bool $enable Whether to enable <link> tag discovery. Default false.
			 */
			$attr['discover'] = ( apply_filters( 'embed_oembed_discover', false ) && author_can( $post_ID, 'unfiltered_html' ) );

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

			// Maybe cache the result
			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}}' );
			}

			// 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 );
	}

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/**

* The {@link 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 {@link WP_oEmbed} class.

* @uses wp_oembed_get()

* @uses wp_parse_args()

* @uses wp_embed_defaults()

* @uses WP_Embed::maybe_make_link()

* @uses get_option()

* @uses author_can()

* @uses wp_cache_get()

* @uses wp_cache_set()

* @uses get_post_meta()

* @uses update_post_meta()

* @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 The embed HTML on success, otherwise the original URL.

public function shortcode( $attr, $url = '' ) {

$post = get_post();

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

$url = $attr['src'];

}

if ( empty( $url ) )

return '';

$rawattr = $attr;

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

// kses converts & into & and we need to undo this

// See http://core.trac.wordpress.org/ticket/11311

$url = str_replace( '&', '&', $url );

// Look for known internal handlers

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'] ) ) {

if ( false !== $return = call_user_func( $handler['callback'], $matches, $attr, $url, $rawattr ) )

/**

* Filter the returned embed handler.

* @since 2.9.0

* @see WP_Embed::shortcode()

* @param mixed $return The shortcode callback function to call.

* @param string $url The attempted embed URL.

* @param array $attr An array of shortcode attributes.

return apply_filters( 'embed_handler_html', $return, $url, $attr );

}

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

if ( ! empty( $this->post_ID ) ) // Potentially set by WP_Embed::cache_oembed()

$post_ID = $this->post_ID;

// Unknown URL format. Let oEmbed have a go.

if ( $post_ID ) {

// Check for a cached result (stored in the post meta)

$key_suffix = md5( $url . serialize( $attr ) );

$cachekey = '_oembed_' . $key_suffix;

$cachekey_time = '_oembed_time_' . $key_suffix;

/**

* Filter 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 = get_post_meta( $post_ID, $cachekey, true );

$cache_time = get_post_meta( $post_ID, $cachekey_time, true );

if ( ! $cache_time ) {

$cache_time = 0;

}

$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 ) ) {

/**

* Filter the cached oEmbed HTML.

* @since 2.9.0

* @see WP_Embed::shortcode()

* @param mixed $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 );

}

/**

* Filter whether to inspect the given URL for discoverable <link> tags.

* @since 2.9.0

* @see WP_oEmbed::discover()

* @param bool $enable Whether to enable <link> tag discovery. Default false.

$attr['discover'] = ( apply_filters( 'embed_oembed_discover', false ) && author_can( $post_ID, 'unfiltered_html' ) );

// Use oEmbed to get the HTML

$html = wp_oembed_get( $url, $attr );

// Maybe cache the result

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}}' );

}

// 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 );

}

クラス　WP_Embed::delete_oembed_caches()

	/**
	 * Delete 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 ( '_oembed_' == substr( $post_meta_key, 0, 8 ) )
				delete_post_meta( $post_ID, $post_meta_key );
		}
	}

/**

* Delete 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 ( '_oembed_' == substr( $post_meta_key, 0, 8 ) )

delete_post_meta( $post_ID, $post_meta_key );

}

クラス　WP_Embed::cache_oembed()

	/**
	 * 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 ) );
		/**
		 * Filter the array of post types to cache oEmbed results for.
		 *
		 * @since 2.9.0
		 *
		 * @param array $post_types Array of post types to cache oEmbed results for. Defaults to post types with `show_ui` set to true.
		 */
		if ( empty( $post->ID ) || ! in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', $post_types ) ) ){
			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;
		}
	}

/**

* 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 ) );

/**

* Filter the array of post types to cache oEmbed results for.

* @since 2.9.0

* @param array $post_types Array of post types to cache oEmbed results for. Defaults to post types with `show_ui` set to true.

if ( empty( $post->ID ) || ! in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', $post_types ) ) ){

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;

}

クラス　WP_Embed::autoembed()

	/**
	 * Passes any unlinked URLs that are on their own line to {@link WP_Embed::shortcode()} for potential embedding.
	 *
	 * @uses WP_Embed::autoembed_callback()
	 *
	 * @param string $content The content to be searched.
	 * @return string Potentially modified $content.
	 */
	public function autoembed( $content ) {
		return preg_replace_callback( '|^\s*(https?://[^\s"]+)\s*$|im', array( $this, 'autoembed_callback' ), $content );
	}

/**

* Passes any unlinked URLs that are on their own line to {@link WP_Embed::shortcode()} for potential embedding.

* @uses WP_Embed::autoembed_callback()

* @param string $content The content to be searched.

* @return string Potentially modified $content.

public function autoembed( $content ) {

return preg_replace_callback( '|^\s*(https?://[^\s"]+)\s*$|im', array( $this, 'autoembed_callback' ), $content );

}

クラス　WP_Embed::autoembed_callback()

	/**
	 * Callback function for {@link WP_Embed::autoembed()}.
	 *
	 * @uses WP_Embed::shortcode()
	 *
	 * @param array $match A regex match array.
	 * @return string The embed HTML on success, otherwise the original URL.
	 */
	public function autoembed_callback( $match ) {
		$oldval = $this->linkifunknown;
		$this->linkifunknown = false;
		$return = $this->shortcode( array(), $match[1] );
		$this->linkifunknown = $oldval;

		return "\n$return\n";
	}

/**

* Callback function for {@link WP_Embed::autoembed()}.

* @uses WP_Embed::shortcode()

* @param array $match A regex match array.

* @return string The embed HTML on success, otherwise the original URL.

public function autoembed_callback( $match ) {

$oldval = $this->linkifunknown;

$this->linkifunknown = false;

$return = $this->shortcode( array(), $match[1] );

$this->linkifunknown = $oldval;

return "\n$return\n";

}

クラス　WP_Embed::maybe_make_link()

	/**
	 * Conditionally makes a hyperlink based on an internal class variable.
	 *
	 * @param string $url URL to potentially be linked.
	 * @return string Linked URL or the original URL.
	 */
	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;

		/**
		 * Filter 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 );
	}
}

/**

* Conditionally makes a hyperlink based on an internal class variable.

* @param string $url URL to potentially be linked.

* @return string Linked URL or the original URL.

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;

/**

* Filter 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 );

}

クラス　WP_Embed::定義終了

インスタンス化　グローバル変数

$GLOBALS['wp_embed'] = new WP_Embed();

1	$GLOBALS['wp_embed'] = new WP_Embed();

- Wordpress

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WordPressを読む 64 /blog/wp-includes/class-wp-embed.php

/blog/wp-includes/class-wp-embed.php

クラス WP_Embed::

WordPressを読む　64 /blog/wp-includes/class-wp-embed.php

クラス　WP_Embed::