PHP 7.2中Redis::setTimeout()已废弃报错的修复方案咨询

Hey there, let’s tackle that deprecation warning you’re hitting with Redis::setTimeout() in your Session_redis_driver.php file. This is a common issue once Redis extensions started phasing out older method aliases, and the fix is straightforward.

Why the Warning Happens #

The Redis::setTimeout() method is a deprecated alias for Redis::expire() in modern Redis PHP extensions. PHP 7.2+ started flagging these deprecated methods with a Severity 8192 warning to encourage migration to the supported alternatives.

Best Fix Methods #

1. Direct Replacement with expire()

Locate the line in drivers/Session_redis_driver.php where setTimeout() is called—something like this:

$this->redis->setTimeout($session_key, $ttl);

Replace it with:

$this->redis->expire($session_key, $ttl);

The expire() method works exactly the same way: it takes the key name and a TTL (time to live) in seconds. This change will eliminate the warning without altering any functionality.

2. Use Millisecond Precision with pexpire() (If Needed)

If your session logic requires millisecond-level expiration instead of seconds, swap setTimeout() with pexpire() instead:

$this->redis->pexpire($session_key, $millisecond_ttl);

This is useful if you’re working with very short-lived sessions, but only use it if your original code was already handling milliseconds (unlikely for most session drivers).

3. Optimize by Setting Expiration on set() (Bonus)

For better performance, you can set the expiration at the same time you store the session data, instead of making a separate call. If your driver uses set() to store session data, modify it to include the expiration parameter:

// Instead of separate set() + setTimeout() calls
$this->redis->set($session_key, $session_data, ['EX' => $ttl]);

This reduces the number of round-trips to your Redis server, which is a nice performance win for high-traffic apps. Just make sure your Redis server is version 2.6.0 or newer (most are these days).

Verify the Fix #

After making the change, test your session functionality thoroughly—log in, navigate around, and check that the deprecation warning no longer appears in your error logs.

内容的提问来源于stack exchange，提问作者Sumit Nair