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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 |
|---|---|
| 901 | |
| 902 | foreach ( $custom_fields as $key => $val ) { |
| 903 | if ( 'enclosure' != $key || !is_array( $val ) ) |
| 904 | continue; |
| 905 | foreach( $val as $enc ) { |
| 906 | $enclosure = split( "\n", $enc ); |
| 907 | $pung[] = trim( $enclosure[ 0 ] ); |
| 908 | } |
| 909 | } |
| 910 | $pung = apply_filters('get_enclosed', $pung); |
| 911 | return $pung; |
| 912 | } |
| 913 | |
| 914 | function get_pung($post_id) { // Get URLs already pung for a post |
| 915 | global $wpdb; |
| 916 | $pung = $wpdb->get_var("SELECT pinged FROM $wpdb->posts WHERE ID = $post_id"); |
| 917 | $pung = trim($pung); |
| 918 | $pung = preg_split('/\s/', $pung); |
| 919 | $pung = apply_filters('get_pung', $pung); |