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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 $elt) { var_dump($q); }
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
Fatal error: Uncaught RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in /in/FJSOV:5 Stack trace: #0 /in/FJSOV(5): SplDoublyLinkedList->setIteratorMode(2) #1 {main} thrown in /in/FJSOV on line 5
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in /in/FJSOV:5 Stack trace: #0 /in/FJSOV(5): SplDoublyLinkedList->setIteratorMode(2) #1 {main} thrown in /in/FJSOV on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.23, 7.1.0 - 7.1.9
object(SplQueue)#1 (2) { ["flags":"SplDoublyLinkedList":private]=> int(2) ["dllist":"SplDoublyLinkedList":private]=> array(2) { [0]=> int(1) [1]=> int(2) } } object(SplQueue)#1 (2) { ["flags":"SplDoublyLinkedList":private]=> int(2) ["dllist":"SplDoublyLinkedList":private]=> array(2) { [0]=> int(1) [1]=> int(2) } }

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