In PHP, what are best practices for organizing classes and files to avoid class not found errors when using static methods?

When using static methods in PHP, it's important to organize your classes and files properly to avoid "class not found" errors. One common approach is to use namespaces to group related classes together and autoloaders to automatically load classes when they are needed. This ensures that the classes containing static methods are available when called.

// File structure:
// /classes
//   |- MyNamespace
//      |- MyClass.php

// MyClass.php
namespace MyNamespace;

class MyClass {
    public static function myStaticMethod() {
        // Your static method logic here
    }
}

// Autoloader function
spl_autoload_register(function($className) {
    $file = __DIR__ . '/classes/' . str_replace('\\', '/', $className) . '.php';
    if (file_exists($file)) {
        require_once $file;
    }
});

// Usage
MyNamespace\MyClass::myStaticMethod();