<?php

function moveZeroes(&$nums) {
	print_r($nums);
	$count = count($nums); //counting array elements
	for ($i = 0; $i < $count; $i++) {
		//counting loops while situated in array
		if ($nums[$i] == 0) {
			//checking if number is 0
			unset($nums[$i]); //unsetting this number and moving to the end
			$nums[] = 0;
		}
	}
}
$array = [0, 1, 0, 3, 12];
moveZeroes($array);
print_r($array);