--TEST-- SPL: SplObjectStorage addAll/removeAll --FILE-- <?php class Foo {} $storageA = new \SplObjectStorage(); $storageA->attach(new \Foo); $storageA->attach(new \Foo); echo ("Count storage A: " . count($storageA)); foreach ($storageA as $object) { echo ' x '; } echo "\n"; $storageB = clone $storageA; echo ("Count storage B: " . count($storageB)); foreach ($storageB as $object) { echo ' x '; } echo "\n"; ?> ===DONE=== <?php exit(0); ?> --EXPECTF-- Count storage A: 2 x x Count storage B: 2 x x ===DONE===