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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1097 | if ( $site && (int) $site->blog_id !== get_current_blog_id() ) { |
| 1098 | switch_to_blog( $site->blog_id ); |
| 1099 | $switched_blog = true; |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | $post_id = url_to_postid( $url ); |
| 1104 | |
| 1105 | /** This filter is documented in wp-includes/class-wp-oembed-controller.php */ |
| 1106 | $post_id = apply_filters( 'oembed_request_post_id', $post_id, $url ); |
| 1107 | |
| 1108 | if ( ! $post_id ) { |
| 1109 | if ( $switched_blog ) { |
| 1110 | restore_current_blog(); |
| 1111 | } |
| 1112 | |
| 1113 | return $result; |
| 1114 | } |
| 1115 | |