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--TEST-- ZE2 object cloning, 4 --FILE-- <?php abstract class base { public $a = 'base'; // disallow cloning private function __clone() {} } class test extends base { public $b = 'test'; // reenable cloning public function __clone() {} public function show() { var_dump($this); } } echo "Original\n"; $o1 = new test; $o1->a = array(1,2); $o1->b = array(3,4); $o1->show(); echo "Clone\n"; $o2 = clone $o1; $o2->show(); echo "Modify\n"; $o2->a = 5; $o2->b = 6; $o2->show(); echo "Done\n"; ?> --EXPECT-- Original object(test)#1 (2) { ["b"]=> array(2) { [0]=> int(3) [1]=> int(4) } ["a"]=> array(2) { [0]=> int(1) [1]=> int(2) } } Clone object(test)#2 (2) { ["b"]=> array(2) { [0]=> int(3) [1]=> int(4) } ["a"]=> array(2) { [0]=> int(1) [1]=> int(2) } } Modify object(test)#2 (2) { ["b"]=> int(6) ["a"]=> int(5) } Done