(PHP 5 >= 5.4.0, PHP 7, PHP 8)
SessionHandlerInterface::gc — Cleanup old sessions
$max_lifetime): int|falseCleans up expired sessions. Called by session_start(), based on session.gc_divisor, session.gc_probability and session.gc_maxlifetime settings.
max_lifetime
Sessions that have not updated for the last max_lifetime seconds will be removed.
Returns the number of deleted sessions on success, 或者在失败时返回 false.
Note this value is returned internally to PHP for processing.
| 版本 | 说明 |
|---|---|
| 7.1.0 |
Prior to this version, the function returned true on success.
|