expire 命令/方法/函数

给KEY设置一个生存周期,单位为秒。(pexpire类似,它是使用毫秒作为计算单位)


Parameters

Key: key. The key that will disappear.

Key:将被销毁的KEY


Integer: ttl. The key's remaining Time To Live, in seconds.

integer:生命周期


Return value

BOOL: TRUE in case of success, FALSE in case of failure.


Example

$redis->set('x', '42');

$redis->expire('x', 3); // x will disappear in 3 seconds.

sleep(5);   // wait 5 seconds

$redis->get('x');  // will return `FALSE`, as 'x' has expired.