Constructor overloading

class Hoge {

    public function __construct(){
        $num = func_num_args();
        $args = func_get_args();
        switch($num){
        case 0:
            $this->__call('__construct0', null);
            break;
        case 1:
            $this->__call('__construct1', $args);
            break;
        case 2:
            $this->__call('__construct2', $args);
            break;
        case 3:
            $this->__call('__construct3', $args);
            break;
        default:
            throw new Exception();
        }
    }

    public function __construct0(){
        echo "constructor 0" . PHP_EOL;
    }

    public function __construct1($a){
        echo "constructor 1: " . $a . PHP_EOL;
    }

    public function __construct2($a, array $hoge){
        echo "constructor 2: " . $a . PHP_EOL;
        var_dump($hoge);
    }

    public function __construct3(A $a, A $b, C $c){
        echo "constructor 3: " . PHP_EOL;
        var_dump($a, $b, $c);
    }

    private function __call($name, $arg){
        return call_user_func_array(array($this, $name), $arg);
    }
}

class Hoge {
 
    public function __construct(){
        $num = func_num_args();
        $args = func_get_args();
        switch($num){
        case 0:
            $this->__call('__construct0', null);
            break;
        case 1:
            $this->__call('__construct1', $args);
            break;
        case 2:
            $this->__call('__construct2', $args);
            break;
        case 3:
            $this->__call('__construct3', $args);
            break;
        default:
            throw new Exception();
        }
    }
 
    public function __construct0(){
        echo "constructor 0" . PHP_EOL;
    }
 
    public function __construct1($a){
        echo "constructor 1: " . $a . PHP_EOL;
    }
 
    public function __construct2($a, array $hoge){
        echo "constructor 2: " . $a . PHP_EOL;
        var_dump($hoge);
    }
 
    public function __construct3(A $a, A $b, C $c){
        echo "constructor 3: " . PHP_EOL;
        var_dump($a, $b, $c);
    }
 
    private function __call($name, $arg){
        return call_user_func_array(array($this, $name), $arg);
    }
}