implementing Session Handling in PHP 8.1 with Custom Session Handlers
Can someone help me understand I'm having trouble with session handling in PHP 8.1 when using a custom session handler. I created a class that implements `SessionHandlerInterface` to store session data in a Redis database, but the sessions do not seem to continue across multiple requests. Here’s a simplified version of my session handler: ```php class RedisSessionHandler implements SessionHandlerInterface { private $redis; public function open($savePath, $name) { $this->redis = new Redis(); return $this->redis->connect('127.0.0.1', 6379); } public function read($sessionId) { return $this->redis->get($sessionId) ?: ""; } public function write($sessionId, $data) { return $this->redis->set($sessionId, $data); } public function close() { return $this->redis->close(); } public function destroy($sessionId) { return $this->redis->del($sessionId); } public function gc($maxlifetime) { // Not implemented for simplicity return true; } } $handler = new RedisSessionHandler(); session_set_save_handler($handler, true); session_start(); $_SESSION['username'] = 'test_user'; ``` After calling `session_start()`, I can set a session variable, but when I refresh the page, the session variable is lost. I also checked the Redis server, and it seems that the session data isn't being stored as expected. I added some logging to the `write` method to confirm that it’s being called, but the session ID does not appear in Redis. I suspect there might be an scenario with how I’m handling session IDs or a misconfiguration in PHP, but I need to figure it out. Has anyone else encountered this scenario or have any suggestions for debugging? I've also verified that the Redis extension is installed and enabled in my PHP configuration, but I'm still seeing this behavior. I'm working on a API that needs to handle this. I'd really appreciate any guidance on this. The stack includes Php and several other technologies. Is there a better approach?