checking if a number is divisible by 6 PHP

Question

I want to check if a number is divisible by 6 and if not I need to increase it until it becomes divisible.

how can I do that ?

Answer 1

For micro-optimisation freaks:

if ($num % 6 != 0)
    $num += 6 - $num % 6;

More evaluations of %, but less branching/looping. :-P