Adding the number of seconds in a day could fall in the same day due to daylight saving time, a more reliable way of adding one day (or a given number of days) is this: $tomorrow = mktime(0, 0, 0, date("m") , date("d")+1, date("Y")); Then use date() with $tomorrow to format it. (Taken from example #3 here: http://www.php.net/manual/en/function.date.php, see the Note below the example in that page). Hope that helps. Regards, Jonathan 2009/9/15 Korgan <josberger@xxxxxxxxx>: > Hi, > > I have a problem with date function. > > $gen_pos = mktime(0,0,1,10,25,2009); > $d1 = date("Y-m-d", $gen_pos); // 2009-10-25 > $d2 = date("Y-m-d", $gen_pos + (1*24*60*60)); // 2009-10-25 > $d3 = date("Y-m-d", $gen_pos + (2*24*60*60)); // 2009-10-26 > $d4 = date("Y-m-d", $gen_pos + (3*24*60*60)); // 2009-10-27 > $d5 = date("Y-m-d", $gen_pos + (4*24*60*60)); > $d6 = date("Y-m-d", $gen_pos + (5*24*60*60)); > $d7 = date("Y-m-d", $gen_pos + (6*24*60*60)); > $d8 = date("Y-m-d", $gen_pos + (7*24*60*60)); > > line 2 and line 3 return same date,its wrong ... it should be 2009-10-25 , > 2009-10-26 ? :) > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php