3v4l.org

run code in 300+ PHP versions simultaneously
<?php list( $a, $b, $c) = explode( ":", "23:31:13"); $mod = $c % 5; $input = $a . ':' . $b . ':' . (($mod < 3) ? $c - $mod : $c + (5 - $mod)); echo $input;

preferences:
34.67 ms | 402 KiB | 5 Q