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