Question

do_enclose( string $content,  int $post_ID )

Check content for video and audio links to add as enclosures.

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description

Will not add enclosures that have already been added and will remove enclosures that are no longer in the post. This is called as pingbacks and trackbacks.

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参数

$content

(string) (Required) Post Content.

$post_ID

(int) (Required) Post ID.

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源代码

File: wp-includes/functions.php

function do_enclose( $content, $post_ID ) {
	global $wpdb;

	//TODO: Tidy this ghetto code up and make the debug code optional
	include_once( ABSPATH . WPINC . '/class-IXR.php' );

	$post_links = array();

	$pung = get_enclosed( $post_ID );

	$post_links_temp = wp_extract_urls( $content );

	foreach ( $pung as $link_test ) {
		if ( ! in_array( $link_test, $post_links_temp ) ) { // link no longer in post
			$mids = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $link_test ) . '%') );
			foreach ( $mids as $mid )
				delete_metadata_by_mid( 'post', $mid );
		}
	}

	foreach ( (array) $post_links_temp as $link_test ) {
		if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
			$test = @parse_url( $link_test );
			if ( false === $test )
				continue;
			if ( isset( $test['query'] ) )
				$post_links[] = $link_test;
			elseif ( isset($test['path']) && ( $test['path'] != '/' ) &&  ($test['path'] != '' ) )
				$post_links[] = $link_test;
		}
	}

	/**
	 * Filters the list of enclosure links before querying the database.
	 *
	 * Allows for the addition and/or removal of potential enclosures to save
	 * to postmeta before checking the database for existing enclosures.
	 *
	 * @since 4.4.0
	 *
	 * @param array $post_links An array of enclosure links.
	 * @param int   $post_ID    Post ID.
	 */
	$post_links = apply_filters( 'enclosure_links', $post_links, $post_ID );

	foreach ( (array) $post_links as $url ) {
		if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $url ) . '%' ) ) ) {

			if ( $headers = wp_get_http_headers( $url) ) {
				$len = isset( $headers['content-length'] ) ? (int) $headers['content-length'] : 0;
				$type = isset( $headers['content-type'] ) ? $headers['content-type'] : '';
				$allowed_types = array( 'video', 'audio' );

				// Check to see if we can figure out the mime type from
				// the extension
				$url_parts = @parse_url( $url );
				if ( false !== $url_parts ) {
					$extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
					if ( !empty( $extension ) ) {
foreach ( wp_get_mime_types() as $exts => $mime ) {
if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
	$type = $mime;
	break;
}
}
					}
				}

				if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
					add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" );
				}
			}
		}
	}
}

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更新日志

Version	description
1.5.0	Introduced.

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相关函数

Uses

• wp-includes/functions.php: enclosure_links
• wp-includes/wp-db.php: wpdb::esc_like()
• wp-includes/functions.php: wp_get_mime_types()
• wp-includes/functions.php: wp_extract_urls()
• wp-includes/functions.php: wp_get_http_headers()
• wp-includes/plugin.php: apply_filters()
• wp-includes/post.php: get_enclosed()
• wp-includes/post.php: add_post_meta()
• wp-includes/wp-db.php: wpdb::get_col()
• wp-includes/wp-db.php: wpdb::get_var()
• wp-includes/wp-db.php: wpdb::prepare()
• wp-includes/meta.php: delete_metadata_by_mid()
Show 7 more uses Hide more uses

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Used By

• wp-includes/comment.php: do_all_pings()

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User Contributed Notes