<?php
$total = 6;
$skip = 2;

$array = range  (1,$total);

 while ($skip <= count ($array))
{
 for ($i = 1; $i <= $skip; $i++)
 {
 $bufer = array_shift($array);
 if ($i < $skip)
  array_push($array, $bufer);
 }
}
echo implode(",",$array);