formatting the difference between two times

[cetzel]

I have a dropdown menu with times like:
8:00am, 8:15am, in 15minute increments.

I have done this code to get the timestamps:

$a="7:15am";
$b="11:00pm";

$stra=strtotime($a);
$strb=strtotime($b);

$diff=($strb-$stra);

---

Now I need to take that $diff, and format it so it would show 15.75 - any suggestions?

Chris

[swon]

you were just a step away:

<?
$a="7:15am";
$b="11:00pm";

$stra=strtotime($a);
$strb=strtotime($b);

$diff=($strb-$stra);//sec.
$diff= $diff/3600;// ($diff/60 * 60=hours)

?>

[milind24]

yes , swon given correct that u fogotted to divide by 3600 that is hour diff. 3600 sec.

$diff= $diff/3600;// ($diff/60 * 60=hours) 

[cetzel]

Thanks folks. That did the trick!

Chris