This function returns the difference of two dates in whole days. This is great for such uses as hotel calendars to work out how many nights someone would be staying or to give a count down to a specified date.
The input needs two dates; the start ($Date1) and finish ($Date2).
This function uses the php mktime function.
The date input is yyyy/mm/dd e.g. 2008/01/29
######## start script
function getDayDifference($Date1, $Date2) {
// script by Richard Wilkins
// www.icomtek.co.uk
// explode the dates into their years,months,days
$expDate1 = explode("-", $Date1);
$expDate2 = explode("-", $Date2);
// do the calculation
$days = (int)((mktime (0,0,0,$expDate2[1],$expDate2[2],$expDate2[0]) - mktime(0, 0, 0, $expDate1[1],$expDate1[2],$expDate1[0]))/86400);
// return the result
return $days;
}
// example use
echo getDayDifference("2008-01-01", "2008-01-10");
######## finish script