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<?php $a = array('foo','bar',1); $x1 = new ArrayObject($a); $x1['foo1'] = 'foo1'; $x2 = new ArrayObject; $x2->exchangeArray(iterator_to_array($x1)); $x2['foo2'] = 'foo2'; var_dump($a, $x1, $x2);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> int(1) } object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(4) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> int(1) ["foo1"]=> string(4) "foo1" } } object(ArrayObject)#2 (1) { ["storage":"ArrayObject":private]=> array(5) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> int(1) ["foo1"]=> string(4) "foo1" ["foo2"]=> string(4) "foo2" } }

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