<?php class MyObjectStorage extends SplObjectStorage { // Overwrite getHash() with just some (working) test-method public function getHash($object) { return get_class($object); } } class TestObject {} $list = new SplObjectStorage(); // No issues if using "new SplObjectStorage()" $list->attach(new TestObject()); foreach($list as $x) var_dump($list->offsetExists($x)); // TRUE $list2 = clone $list; foreach($list2 as $x) var_dump($list2->offsetExists($x)); // FALSE
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