time problems

miles_rich

does anyone know how to add two times together??

so if its 15:00 hours and then you want to add 3 hours onto it, it will equal 18:00 hours??

so if its 14:45 hours and then you want to add 3 hours and 15 mins onto it, it will equal 18:00 hours??

:mad: 😕

daveyboy

You would probably want to change your times into timestamps with
strtotime (http://de.php.net/manual/en/function.strtotime.php )
. Then you can play with the numbers and turn them back to strings with strftime (http://de.php.net/manual/en/function.strftime.php )
You want something like:

$time = strtotime( '15:00' );
$time += 3600 * 3; // 3 hrs worth of seconds
echo strftime("%H:%M", $time );

wizkid

Hi,

first, convert the time into an UNIX timestamp. Then, add the number of seconds you want (3 hours = 10800 seconds) you want to add to the UNIX timestamp. Last, convert the UNIX timestamp back into a readable format.

$hours   = 14;
$minutes = 15; /* This is equal to: 14:15 */

$u = mktime($hours, $minutes, 0, 1, 1, 2002);
$u += 3600; /* 3600 secons = 1 hour */

echo date("H:i", $u);

wizkid

miles_rich

How would i add mins??

why is it 3600??

wizkid

Hi,

one minute is 60 seconds. So, one hour is 60*60 seconds which equals 3600! 😉

wizkid

jayant

Times is timestamps are nothing but seconds elapsed since Jan 1, 1970,...

1 min = 60 sec.
1 hr. = 60 min = 6060 sec. = 3600 sec.
1 day = 24 hr. = 24 3600 sec. = 86400 sec.
got it??

miles_rich

sorry blonde moment 😃