3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $a[] = 1; $a[] = 2; $a[] = 3; $a[] = 4; $a[] = 5; $a[] = 6; unset($a[1]); var_dump($a); $a = array_values($a); var_dump($a);
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 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 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, 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(5) { [0]=> int(1) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) } array(5) { [0]=> int(1) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> int(6) }

preferences:
316.56 ms | 406 KiB | 459 Q