3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function f($current_day, $delay) { if(($current_day+$delay) > 5) return min($current_day, 5)+((($delay-1)%5)+1); else return $delay; } for($i = 1; $i < 8; $i++) printf("\tf(%d, 1) => %d\n", $i, f($i, 1)); printf("\n\n\n\n"); for($i = 1; $i < 8; $i++) printf("\tf(%d, 2) => %d\n", $i, f($i, 2));
based on DZgRN
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
f(1, 1) => 1 f(2, 1) => 1 f(3, 1) => 1 f(4, 1) => 1 f(5, 1) => 6 f(6, 1) => 6 f(7, 1) => 6 f(1, 2) => 2 f(2, 2) => 2 f(3, 2) => 2 f(4, 2) => 6 f(5, 2) => 7 f(6, 2) => 7 f(7, 2) => 7