this question has answer here:
i want minus 2 dates in php
for example:
$date1 = 08/16/2013; $date2 = 08/23/2013; $answer = date2 - date1; the $answer should 7, how that? thank much
start using datetime class date/time manipulation :
$date1 = new datetime('08/16/2013'); $date2 = new datetime('08/23/2013'); $diff = $date1->diff($date2); print_r($diff); // or $diff->days output :
dateinterval object ( [y] => 0 [m] => 0 [d] => 7 [h] => 0 [i] => 0 [s] => 0 [invert] => 0 [days] => 7 ) read more datetime:diff().
please note various strtotime() examples not correct in date/time difference calculation. simplest example difference between 2013-03-31 21:00 , 2013-03-30 21:00. naked eye exact 1 day difference, if subtract 2 dates, 82800 seconds 0.95833333333333 days. because of time change winter summer time. datetime handles leap years , time-zones properly.
