<?phpclass BaseClass {function __construct() {print "In BaseClass constructor\n";}}class SubClass extends BaseClass {function __construct() {parent::__construct();print "In SubClass constructor\n";}}class OtherSubClass extends BaseClass {// inherits BaseClass's constructor}// In BaseClass constructor$obj = new BaseClass();// In BaseClass constructor// In SubClass constructor$obj = new SubClass();// In BaseClass constructor$obj = new OtherSubClass();?>