3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(-1 => 0); array_pop($array); array_push($array, 0); array_push($array, 0); var_dump($array); echo"\nDone"; ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.9, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { [-1]=> int(0) [0]=> int(0) } Done
Output for 5.4.32 - 5.4.45, 5.5.16 - 5.5.38, 5.6.0 - 5.6.40, 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
array(2) { [0]=> int(0) [1]=> int(0) } Done
Output for 5.2.10 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.31, 5.5.0 - 5.5.15
array(2) { [-1]=> int(0) [9223372036854775807]=> int(0) } Done
preferences:
287.91 ms | 402 KiB | 456 Q