How can modern PHP frameworks handle object instantiation and dependency management more efficiently than traditional approaches?

Modern PHP frameworks can handle object instantiation and dependency management more efficiently by utilizing dependency injection containers. These containers allow developers to define dependencies for each object and automatically inject them when the object is created, reducing the need for manual instantiation and management of dependencies. 

// Using a dependency injection container in a modern PHP framework
class Database {
    public function __construct($host, $username, $password) {
        // Database connection logic
    }
}

class UserRepository {
    private $db;

    public function __construct(Database $db) {
        $this->db = $db;
    }
}

$container = new DI\Container();
$container->set('Database', function() {
    return new Database('localhost', 'root', 'password');
});

$userRepository = $container->get('UserRepository');

Keywords

PHP frameworks object instantiation dependency management efficiency modern approaches

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