3v4l.org

run code in 300+ PHP versions simultaneously
<?php function cmp($a, $b) { if ($a == $b) { return 0; } echo $b." mukesh "; return ($a < $b) ? -1 : 1; } $a = array(3, 2, 5, 6, 1); usort($a, "cmp"); foreach ($a as $key => $value) { echo "$key: $value\n"; }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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
2 mukesh 2 mukesh 5 mukesh 6 mukesh 1 mukesh 1 mukesh 1 mukesh 1 mukesh 0: 1 1: 2 2: 3 3: 5 4: 6
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
2 mukesh 3 mukesh 6 mukesh 5 mukesh 1 mukesh 2 mukesh 0: 1 1: 2 2: 3 3: 5 4: 6

preferences:
264.24 ms | 402 KiB | 293 Q