👀 Views: 32 💬 Answers: 1 📅 Created: 2025-09-06

php session redis php8.1 PHP

I've been banging my head against this for hours. I'm relatively new to this, so bear with me... I'm facing an issue with session handling in PHP 8.1 while using a custom session save handler. I implemented a custom save handler to store sessions in a Redis database, and it seems to work initially. However, after a few requests, I get a warning: `Warning: session_start(): Failed to initialize storage module: redis`. This issue occurs intermittently, and I'm not sure why the session handler fails to initialize. I've set up the Redis connection and registered the custom session handler like this: ```php class RedisSessionHandler implements SessionHandlerInterface { private $redis; public function open($savePath, $sessionName) { $this->redis = new Redis(); return $this->redis->connect('127.0.0.1', 6379); } public function close() { return $this->redis->close(); } public function read($id) { return $this->redis->get($id) ?: ''; } public function write($id, $data) { return $this->redis->set($id, $data); } public function destroy($id) { return $this->redis->delete($id); } public function gc($maxlifetime) { // not needed for Redis implementation return true; } } $handler = new RedisSessionHandler(); session_set_save_handler($handler, true); session_start(); ``` When I analyze the Redis logs, I don't see any connections being dropped, and I can still connect to Redis using the command line. I've also tried increasing the `session.gc_maxlifetime` to 1440 and ensuring Redis has enough memory allocated. Is there anything specific I should check in my implementation, or could there be any hidden configuration issues in PHP 8.1 that might lead to this behavior? Any help would be greatly appreciated! Any ideas what could be causing this? I'm working on a web app that needs to handle this. How would you solve this?