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Source View: delete_{$meta_type}_metadata

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Line Code
367       *
368       * @param null|bool $delete     Whether to allow metadata deletion of the given type.
369       * @param int       $object_id  ID of the object metadata is for.
370       * @param string    $meta_key   Metadata key.
371       * @param mixed     $meta_value Metadata value. Must be serializable if non-scalar.
372       * @param bool      $delete_all Whether to delete the matching metadata entries
373       *                              for all objects, ignoring the specified $object_id.
374       *                              Default false.
375       */
376      $check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all );
377      if ( null !== $check ) {
378           return (bool) $check;
379      }
380
381      $_meta_value = $meta_value;
382      $meta_value  = maybe_serialize( $meta_value );
383
384      $query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key );
385