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<?php $zrob = function () { static $x=0; echo ++$x."\n"; }; $q = new SplQueue(); $q->setIteratorMode(SplDoublyLinkedList::IT_MODE_DELETE); $q->enqueue($zrob); $q->enqueue($zrob); $z = $q->dequeue(); $z(); $z = $q->dequeue(); $z(); $z = $q->dequeue(); $z();
Output for git.master, git.master_jit, rfc.property-hooks
1 2 Fatal error: Uncaught RuntimeException: Can't shift from an empty datastructure in /in/16gaQ:16 Stack trace: #0 /in/16gaQ(16): SplQueue->dequeue() #1 {main} thrown in /in/16gaQ on line 16
Process exited with code 255.

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