<?php
$dow = array("mon","tue","wed","thu","fri","sat","sun");
$pick_a_day = 2; // user input; NON zero based. monday = 1
$pick_a_day--; // make it zero based to use in code
foreach($dow as $inc => $an_element )
{
echo $dow[($pick_a_day+(count($dow))) % (count($dow))]." - loop number:".($inc+1)."\n";
$pick_a_day++;
}
?>