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Source View: pre_transient_{$transient}

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Line Code
603       * Passing a truthy value to the filter will effectively short-circuit retrieval
604       * of the transient, returning the passed value instead.
605       *
606       * @since 2.8.0
607       *
608       * @param mixed $pre_transient The default value to return if the transient does not exist.
609       *                             Any value other than false will short-circuit the retrieval
610       *                             of the transient, and return the returned value.
611       */
612      $pre = apply_filters( 'pre_transient_' . $transient, false );
613      if ( false !== $pre )
614           return $pre;
615
616      if ( wp_using_ext_object_cache() ) {
617           $value = wp_cache_get( $transient, 'transient' );
618      } else {
619           $transient_option = '_transient_' . $transient;
620           if ( ! defined( 'WP_INSTALLING' ) ) {
621                // If option is not in alloptions, it is not autoloaded and thus has a timeout