How to iterate over all possible combinations between arrays?

Question

PHP

Hello, could you tell me how to iterate over all possible combinations between arrays?
Let's say there are three arrays
$a = array('20', '25, '30');
$b = array('100', '150, '200');
$c = array('6000', '6500, '7000');
The output should be
20x100x6000
20x150x6000
20x100x6500
25x100x6000
etc...

Answer 1

3 nested loops.
well, or recursion if the depth is not static