require __DIR__ . '/vendor/autoload.php';
use MyNamespace\MyClass; $myClass = new MyClass();Here, the class loader will automatically look for the `MyClass` class within the `MyNamespace` namespace, load it, and make it available for use. Libraries that use the Composer\Autoload\ClassLoader include: - Doctrine ORM - Symfony Framework - Laravel Framework Using the class loader greatly simplifies the process of managing dependencies in PHP projects, as it automates the process of loading classes and reduces the manual effort required.