Calculating Days from 2Calender

Am using 2 calenders in my form:

$s=split("[/]",$date);
$e=split("[/]",$datem);
for($i=0;$i<=count($s);$i++)
{
  $year1=$s[0];
  $mon1=$s[1];
  $day1=$s[2];
}
for($i=0;$i<=count($e);$i++)
{
  $year2=$e[0];
  $mon2=$e[1];
  $day2=$e[2];
}

PHP:

and i want to calculate how many days he choosed??
i did so

echo $day=$day2-$day1;

PHP:

but the problem,if he choose for example
From:2007/12/30
to:2008/12/09
i will have -21days
can anyone help me???

 

and if i choosed
From:2007/12/30
To:2008/01/02
it gave me 28
and it suppose to be 3 days!!!!!!!!

 

You need to convert to timestamp for these things. I ain't PHP guru, but hope this helps

$s = strtotime($date); // converts start days to timestamp
$e = strtotime($datem); // converts end days to timestamp

$tDiff = $e - $s; // calculate the difference
$days = ceil($tDiff / 86400); // There are 86400 seconds in a day. ceil() rounds the fractions up, can't have decimal days
echo $days; // outputs the number of days

PHP:

 

Thnxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx it worked