3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [0,1,2,3,4,5]; unset($a[5]); array_pop($a); $a[] = 6; var_dump($a);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array(5) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [3]=> int(3) [6]=> int(6) }
preferences:
105.9 ms | 408 KiB | 5 Q