WP_Hook::resort_active_iterations( false|int $new_priority = false, bool $priority_existed = false )

114	private function resort_active_iterations( $new_priority = false, $priority_existed = false ) {115		$new_priorities = $this->priorities;116 117		// If there are no remaining hooks, clear out all running iterations.118		if ( ! $new_priorities ) {119			foreach ( $this->iterations as $index => $iteration ) {120				$this->iterations[ $index ] = $new_priorities;121			}122 123			return;124		}125 126		$min = min( $new_priorities );127 128		foreach ( $this->iterations as $index => &$iteration ) {129			$current = current( $iteration );130 131			// If we're already at the end of this iteration, just leave the array pointer where it is.132			if ( false === $current ) {133				continue;134			}135 136			$iteration = $new_priorities;137 138			if ( $current < $min ) {139				array_unshift( $iteration, $current );140				continue;141			}142 143			while ( current( $iteration ) < $current ) {144				if ( false === next( $iteration ) ) {145					break;146				}147			}148 149			// If we have a new priority that didn't exist, but ::apply_filters() or ::do_action() thinks it's the current priority...150			if ( $new_priority === $this->current_priority[ $index ] && ! $priority_existed ) {151				/*152				 * ...and the new priority is the same as what $this->iterations thinks is the previous153				 * priority, we need to move back to it.154				 */155 156				if ( false === current( $iteration ) ) {157					// If we've already moved off the end of the array, go back to the last element.158					$prev = end( $iteration );159				} else {160					// Otherwise, just go back to the previous element.161					$prev = prev( $iteration );162				}163 164				if ( false === $prev ) {165					// Start of the array. Reset, and go about our day.166					reset( $iteration );167				} elseif ( $new_priority !== $prev ) {168					// Previous wasn't the same. Move forward again.169					next( $iteration );170				}171			}172		}173 174		unset( $iteration );175	}