[SOLVED] finding difference in time

[php_novice2007]

Hi,

 

I've got two timestamp strings, str1 and str2, in the format "yyyy-mm-dd hh:mm:ss". I want to do str1 - str2 and have the answer as in integer in seconds.

 

Is there a function out there that I can use or do I have to manually tokenise both strings and then do subtractions... cos I'm thinking its gonna get confusing if the day is different..

 

Thanks!

[trq]

date().

[php_novice2007]

Hi,

 

Now I want to find the midpoint in time between the two times.

 

I've tried doing:

 

$date_diff = date(strtotime($currentTime)) - date(strtotime($lastTime));

$midTime = date(strtotime($t_last)) + date(strtotime($date_diff / 2));

 

($currentTime and $lastTime are two strings in the format "yyyy-mm-dd hh:mm:ss", $date_diff is the time difference in seconds)

 

E.g. $lastTime="2007-05-18 07:43:22" $currentTime="2007-05-18 08:43:22"

the code gives $midTime="2365047802"

 

So I want $midTime = "2007-05-18 08:13:22"..

 

How do I do it..?

[hitman6003]

<?php
$lastTime = "2007-05-18 07:43:22"; 
$currentTime = "2007-05-18 08:43:22";

echo date("Y-m-d H:i:s",  strtotime($lastTime) + (floor( (strtotime($currentTime) - strtotime($lastTime)) / 2) ) );

?>

[php_novice2007]

Thanks~!