3v4l.org

run code in 300+ PHP versions simultaneously
<?php $q = new SplPriorityQueue(); $q->insert(1, 1); $q->insert(2, 2); foreach ($q as $v) { echo $v; }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
21
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'SplPriorityQueue' not found in /in/6CRAT on line 2
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: splpriorityqueue in /in/6CRAT on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: splpriorityqueue in /in/6CRAT on line 2
preferences:
269.78 ms | 401 KiB | 343 Q