3v4l.org

run code in 300+ PHP versions simultaneously
<?php $xs = new SplDoublyLinkedList(); $xs->push(1); $xs->push(2); $xs->push(3); foreach ($xs as $x) { echo "$x\n"; } foreach ($xs as $i => $x) { echo "$i => $x\n"; }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
1 2 3 0 => 1 1 => 2 2 => 3
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'SplDoublyLinkedList' not found in /in/RmZA3 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: spldoublylinkedlist in /in/RmZA3 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: spldoublylinkedlist in /in/RmZA3 on line 3
preferences:
140.92 ms | 408 KiB | 5 Q