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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 |
|---|---|
| 2997 | |
| 2998 | foreach ( $custom_fields as $key => $val ) { |
| 2999 | if ( 'enclosure' != $key || !is_array( $val ) ) |
| 3000 | continue; |
| 3001 | foreach( $val as $enc ) { |
| 3002 | $enclosure = split( "\n", $enc ); |
| 3003 | $pung[] = trim( $enclosure[ 0 ] ); |
| 3004 | } |
| 3005 | } |
| 3006 | $pung = apply_filters('get_enclosed', $pung, $post_id); |
| 3007 | return $pung; |
| 3008 | } |
| 3009 | |
| 3010 | /** |
| 3011 | * Retrieve URLs already pinged for a post. |
| 3012 | * |
| 3013 | * @since 1.5.0 |
| 3014 | * @uses $wpdb |
| 3015 | * |