Difficulty with Dynamic Class Loading in PHP 8.1 Using Namespaces and Autoloading
I'm currently working with an scenario with dynamically loading classes using namespaces in PHP 8.1. I'm trying to implement a simple plugin system where plugins can be loaded based on user input, but I'm running into a 'Class not found' behavior when attempting to instantiate a class that should be autoloaded. Here's the code I'm working with: ```php // autoload.php spl_autoload_register(function ($class) { $file = __DIR__ . '/' . str_replace('\\', '/', $class) . '.php'; if (file_exists($file)) { require $file; } }); ``` And I have a plugin class defined as follows: ```php // src/Plugins/MyPlugin.php namespace Plugins; class MyPlugin { public function run() { return 'MyPlugin is running!'; } } ``` When I try to load this class dynamically like so: ```php // index.php require 'autoload.php'; $pluginName = 'Plugins\MyPlugin'; if (class_exists($pluginName)) { $plugin = new $pluginName(); echo $plugin->run(); } else { echo 'Class not found: ' . $pluginName; } ``` I'm getting the behavior message: `Class not found: Plugins\MyPlugin`. I've double-checked that the file path and namespace are correct, and that the autoload function is registered before I attempt to instantiate the class. I also confirmed that the namespaces match and that there are no typos. I've tried manually requiring the class file directly in `index.php`, which works fine, but I want to stick with the autoloading approach for better maintainability. Is there something I might be missing in my setup, or a different way I should be structuring my autoload function? Any guidance would be appreciated!