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;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.3.6
23:31:15
preferences:
257.68 ms | 406 KiB | 459 Q