👀 Views: 216 💬 Answers: 1 📅 Created: 2025-06-13

php redis session-management

I'm confused about I'm prototyping a solution and I recently switched to I'm a bit lost with Hey everyone, I'm running into an issue that's driving me crazy... I'm experiencing issues with session management in my PHP application after switching to Redis for session storage. My setup works well locally, but when deploying to production, sessions sometimes seem to not continue, or I get unexpected session IDs. I've configured Redis as the session handler using the following code: ```php ini_set('session.save_handler', 'redis'); ini_set('session.save_path', 'tcp://127.0.0.1:6379'); session_start(); ``` After calling `session_start()`, I'm populating session variables like this: ```php $_SESSION['user_id'] = 123; ``` However, upon subsequent page loads, I notice that the session data is sometimes missing or I'm getting a new session ID altogether. In my `php.ini`, I have `session.gc_maxlifetime` set to 1440, which should be adequate, and I've checked the Redis setup with `redis-cli`, and it appears that sessions are being stored correctly there. In my web server logs, I see errors like `PHP Warning: session_start(): Failed to initialize storage module: redis` intermittently. I've also tried explicitly setting the `session.gc_probability` and `session.gc_divisor` to ensure garbage collection runs less frequently: ```php ini_set('session.gc_probability', 1); ini_set('session.gc_divisor', 100); ``` Despite these attempts, I still face problems. I've also checked the Redis keys with `KEYS *` and can confirm that sessions are being created, but the session ID returned by `session_id()` does not match what is stored in Redis. Has anyone else encountered this scenario with PHP 8.1 and Redis? What configurations should I check to ensure sessions continue correctly across requests? Any pointers in the right direction? I'm working on a web app that needs to handle this.