<?php
function move_zero($arr)
{
   $count = 0;
   $n = sizeof($arr);
    
    for ($i = 0; $i < $n; $i++)
    {
        if ($arr[$i] != 0)
          {
            $arr[$count++] = $arr[$i]; 
          }
     }
 
    // Let all non-zero elements have been shifted towards front  
    
    while ($count < $n)
    {
        $arr[$count++] = 0;
    }

    return $arr;
}
$num_list1 = array(0,2,3,4,6,7,10);
$num_list2 = array(10,0,11,12,0,14,17);
print_r(move_zero($num_list1));
print_r(move_zero($num_list2));
?>