Welcome, visitor! Log in
 

Source View: delete_postmeta

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

This hook occurs 2 times in this file.

Line Code
1660  * @since 2.1.0
1661  * @uses $wpdb
1662  */
1663 function do_all_pings() {
1664      global $wpdb;
1665
1666      // Do pingbacks
1667      while ($ping = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_pingme' LIMIT 1")) {
1668           $mid = $wpdb->get_var( "SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = {$ping->ID} AND meta_key = '_pingme' LIMIT 1");
1669           do_action( 'delete_postmeta', $mid );
1670           $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->postmeta} WHERE meta_id = %d", $mid ) );
1671           do_action( 'deleted_postmeta', $mid );
1672           pingback($ping->post_content, $ping->ID);
1673      }
1674
1675      // Do Enclosures
1676      while ($enclosure = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_encloseme' LIMIT 1")) {
1677           $mid = $wpdb->get_var( $wpdb->prepare("SELECT meta_id FROM {$wpdb->postmeta} WHERE post_id = %d AND meta_key = '_encloseme'", $enclosure->ID) );
1678           do_action( 'delete_postmeta', $mid );
1679           $wpdb->query( $wpdb->prepare("DELETE FROM {$wpdb->postmeta} WHERE meta_id =  %d", $mid) );
1680           do_action( 'deleted_postmeta', $mid );
1681           do_enclose($enclosure->post_content, $enclosure->ID);
1682      }
1683
1684      // Do Trackbacks
1685      $trackbacks = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE to_ping <> '' AND post_status = 'publish'");
1686      if ( is_array($trackbacks) )
1687           foreach ( $trackbacks as $trackback )