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<?php $q = new SplQueue(); $q->setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO); $q->setIteratorMode(SplDoublyLinkedList::IT_MODE_LIFO); $q->enqueue(1); $q->enqueue(2); foreach ($q as $elt) { var_dump($elt); }
Output for 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in /in/RhYP0:5 Stack trace: #0 /in/RhYP0(5): SplDoublyLinkedList->setIteratorMode(2) #1 {main} thrown in /in/RhYP0 on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.23, 7.1.0 - 7.1.9
int(2) int(1)

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