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

$num += (6-$num%6)%6;

no need for a while loop! Modulo (%) returns the remainder of a division. IE 20%6 = 2. 6-2 = 4. 20+4 = 24. 24 is divisible by 6.