3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = [1, 2, 3, 4, 5]; $b = array_filter($a, fn ($x) => $x <= 3); $c = array_filter($a, fn ($x) => $x >= 3); var_dump(array_is_list($a)); var_dump(array_is_list($b)); var_dump(array_is_list($c));
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
bool(true) bool(true) bool(false)
Output for 8.0.1 - 8.0.30
Fatal error: Uncaught Error: Call to undefined function array_is_list() in /in/VegUr:8 Stack trace: #0 {main} thrown in /in/VegUr on line 8
Process exited with code 255.
preferences:
73.02 ms | 1147 KiB | 4 Q