3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = true; $b = false; $c = true; $d = [ ($a ? "a":null), ($b ? "b":null), ($c ? "c":null), ]; var_dump($d);
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(3) { [0]=> string(1) "a" [1]=> NULL [2]=> string(1) "c" }
preferences:
134.33 ms | 404 KiB | 202 Q