3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['6', '12', '11']; $b = array_map(function ($i) { return (int)$i; }, $a); var_dump($b);
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(3) { [0]=> int(6) [1]=> int(12) [2]=> int(11) }
preferences:
98.62 ms | 1487 KiB | 4 Q