1<?php 2 3interface SessionUpdateTimestampHandlerInterface 4{ 5 /** 6 * Checks if a session identifier already exists or not. 7 * 8 * @param string $key 9 * 10 * @return bool 11 */ 12 public function validateId($key); 13 14 /** 15 * Updates the timestamp of a session when its data didn't change. 16 * 17 * @param string $key 18 * @param string $val 19 * 20 * @return bool 21 */ 22 public function updateTimestamp($key, $val); 23} 24