1--TEST-- 2SPL: SplObjectStorage addAll/removeAll 3--FILE-- 4<?php 5class Foo {} 6 7$storageA = new \SplObjectStorage(); 8$storageA->attach(new \Foo); 9$storageA->attach(new \Foo); 10 11echo ("Count storage A: " . count($storageA)); 12foreach ($storageA as $object) { 13 echo ' x '; 14} 15 16echo "\n"; 17$storageB = clone $storageA; 18 19echo ("Count storage B: " . count($storageB)); 20foreach ($storageB as $object) { 21 echo ' x '; 22} 23echo "\n"; 24?> 25--EXPECT-- 26Count storage A: 2 x x 27Count storage B: 2 x x 28