3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rand = range(0, 50); shuffle($rand); $rand2 = range(0, 50); shuffle($rand2); $arr = array_combine($rand, $rand2); $arr = array_filter($arr,function($k){ return $k <= 15 && $k >= 10; },2); ksort($arr); foreach($arr as $key => $value) { echo "$key: $value\n"; }

preferences:
33.38 ms | 402 KiB | 5 Q