reverse loop for date display

Answer 1

How about changing the order:

for($i=6; $i>=0; $i--) 

Answer 2

Well, this one's easier, isn't it:

for($i=-6; $i<=0; $i++){
   printf('<br>%s<br>', date('m/d', strtotime("+$i days")));
}

prints

<br>04/02<br><br>04/03<br><br>04/04<br><br>04/05<br><br>04/06<br><br>04/07<br><br>04/08<br>