trait

multiple inheritance

class Mobile {
    public function battery() {
        echo 'Battery: MB_06, MF_02, MF_00' . PHP_EOL;
    }
}
trait Laser {
    public function power() {
        echo 'Power: 10 mW' . PHP_EOL;
    }
}
trait Projector {
    public function range() {
        echo 'Range: 2 M' . PHP_EOL;
    }
}
class Galaxy extends Mobile {
    use Laser;
    use Projector;
}

$obj1 = new Galaxy;

$obj1->range();
$obj1->power();
$obj1->battery();