--TEST-- Test clone of DateTime derived objects with __clone magic method --FILE-- <?php //Set the default time zone date_default_timezone_set("Europe/London"); //Set the default time zone date_default_timezone_set("Europe/London"); class DateTimeExt1 extends DateTime { public function __clone() { echo "-- DateTimeExt1 __clone magic method called --\n"; } } echo "*** Testing clone of objects derived from DateTime class with __clone magic method***\n"; $d1 = new DateTimeExt1("2009-02-03 12:34:41 GMT"); $d1_clone = clone $d1; //verify clone by calling method on new object var_dump( $d1_clone->format( "m.d.y") ); ?> ===DONE=== --EXPECTF-- *** Testing clone of objects derived from DateTime class with __clone magic method*** -- DateTimeExt1 __clone magic method called -- string(8) "02.03.09" ===DONE===