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Source View: delete_{$meta_type}_meta

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

Line Code
203           $query .= $wpdb->prepare(" AND $type_column = %d", $object_id );
204
205      if ( $meta_value )
206           $query .= $wpdb->prepare(" AND meta_value = %s", $meta_value );
207
208      $meta_ids = $wpdb->get_col( $query );
209      if ( !count( $meta_ids ) )
210           return false;
211
212      do_action( "delete_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value );
213
214      $query = "DELETE FROM $table WHERE $id_column IN( " . implode( ',', $meta_ids ) . " )";
215
216      $count = $wpdb->query($query);
217
218      if ( !$count )
219           return false;
220
221      wp_cache_delete($object_id, $meta_type . '_meta');