👀 Views: 37 💬 Answers: 1 📅 Created: 2025-06-09

php redis session-handling

I've searched everywhere and can't find a clear answer. I've tried everything I can think of but I'm building a feature where I've searched everywhere and can't find a clear answer. Hey everyone, I'm running into an issue that's driving me crazy... I'm having trouble with a custom session handler in PHP 8.1. I've implemented a session handler to store session data in a Redis database. However, when I try to retrieve the session data, it seems to be returning null values for certain keys that I know should exist. Here's the code for my session handler: ```php class RedisSessionHandler implements SessionHandlerInterface { private $redis; public function __construct($redis) { $this->redis = $redis; } public function open($savePath, $sessionName) { return true; } public function close() { return true; } public function read($sessionId) { $data = $this->redis->get($sessionId); return $data ? $data : ''; } public function write($sessionId, $data) { return $this->redis->set($sessionId, $data); } public function destroy($sessionId) { return $this->redis->del($sessionId); } public function gc($maxlifetime) { return true; } } ``` I registered the session handler with this code: ```php $redis = new Redis(); $redis->connect('127.0.0.1', 6379); $handler = new RedisSessionHandler($redis); session_set_save_handler($handler, true); session_start(); ``` After calling `session_start()`, I'm setting session variables like this: ```php $_SESSION['user_id'] = 123; $_SESSION['username'] = 'test_user'; ``` However, when I try to retrieve the session data on a subsequent request, like this: ```php session_start(); echo $_SESSION['user_id']; echo $_SESSION['username']; ``` I get nothing. I also checked the Redis instance, and it contains the session data, but it seems the values are not being deserialized correctly. I've also tried serializing the data before storing it in Redis: ```php public function write($sessionId, $data) { return $this->redis->set($sessionId, serialize($data)); } ``` But I still face the same issue. The session variables are not accessible after the initial write. I suspect it might be related to how I'm handling the session data or how Redis is storing it. Any ideas on what could be causing this issue? Thank you! My development environment is Linux. Any ideas what could be causing this? For context: I'm using Php on Linux. Is there a better approach? Any feedback is welcome! I'm on Ubuntu 20.04 using the latest version of Php. Any pointers in the right direction? I'd love to hear your thoughts on this.