Need help with adding 30 minutes

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May 8th, 2008, 10:57 AM

Dalixam

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PHP5 - Need help with adding 30 minutes

Hi,

I have a time, i.e. 9.30, and I want to add 30 minutes. This is the method I have constructed:

PHP Code:


		
			
 $time_start = '9.30';



$tmp = explode(".",$time_start);

$tmp = mktime($tmp[0], $tmp[1], 00, 1, 1, 2008);

$time_end = date("G-s",strtotime("+30 mins",$tmp));

$time_end should output 10-00 and it does. But if the start time is different, like 11.00 then $time_end should be 11.30, but it's not, it outputs 11.00 as no calculation was done.

Can anyone point out what I'm doing wrong?

May 8th, 2008, 11:11 AM

thedude2010

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s is seconds
if you do this instead

PHP Code:


		
			
 $time_end=date("G-i-s", strtotime("+30 Mins", $tmp));

you'll see where the problem is.
i is minutes with the leading zeros

Quote:

Originally Posted by Dalixam

Hi,

I have a time, i.e. 9.30, and I want to add 30 minutes. This is the method I have constructed:

PHP Code:


		
			
 $time_start = '9.30';



$tmp = explode(".",$time_start);

$tmp = mktime($tmp[0], $tmp[1], 00, 1, 1, 2008);

$time_end = date("G-s",strtotime("+30 mins",$tmp));

May 8th, 2008, 11:12 AM

b3n

Dreams Abundance

Join Date: Jul 2004

Location: Prisoner of the Sun

Posts: 3,968

Time spent in forums: 1 Month 3 Weeks 2 Days 11 h 46 m 5 sec
Reputation Power: 532

when you call date() your format string is telling it to only display hours and seconds. So the 30 minutes is never shown. So just change the format string:

PHP Code:


		
			
 $time_start = '10.00';



$tmp = explode(".",$time_start);

$tmp = mktime($tmp[0], $tmp[1], 00, 1, 1, 2008);

$time_end = date("G:i",strtotime("+30 mins",$tmp));



echo $time_end;

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May 8th, 2008, 11:18 AM

Dalixam

Registered User

Join Date: Jan 2002

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I feel so stupid. I even double checked to make sure I had the correct format string and I still missed it.

Thanks for pointing out the error. I'll go in shame and hide in a hole

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