CODEWITHSUNDEEP
phptimedatetime-format
Radek
Radek

Reputation: 11091

Time difference in php gives me strange number of hours

My code is 

   $start_time= time();
   echo "<BR><BR>";
   echo "start: ".date("G:i:s",$start_time);echo "<BR>";
   echo "now: ".date("G:i:s",time());echo "<BR>";
   echo "difference: ".date("G:i:s",time()-$start_time);echo "<BR>";

   echo "<BR><BR>";
   echo time()-$start_time;
   echo "<BR><BR>";

and the output is

start: 12:03:41
now: 12:06:04
difference: 10:02:23


143

Any idea why number of hours is not 0?

Upvotes: 0

Views: 281

Answers (3)

Adrian Cornish
Adrian Cornish

Reputation: 23848

Have you tried explicitly setting a time zone for you script?

date_default_timezone_set('UTC');

Upvotes: 1

Milo LaMar
Milo LaMar

Reputation: 2256

Difference should just be time() - $start_time to give the number of seconds it takes to run the script. If you pass it to date, then it will give the date 143 seconds after the Unix Epoch. Make the date format 'Y/m/d G:i:s' to see exactly what's going on there.

Upvotes: 1

Mob
Mob

Reputation: 11098

I think you should use unix timestamp when calculating date differences.

See below

$start_time= date("U", time());
sleep(5); //stops execution for 5 seconds
$endtime = date("U",time());
echo date("G:i:s",$endtime - $start_time); //Outputs 0:00:05

or something like this for actual date / time differences

 $start_time= date("U", strtotime("11/11/11 12:53"));
 $endtime = date("U",strtotime("11/11/11 12:59"));
 echo date("G:i:s",$endtime - $start_time);

Outputs 0:06:00 6 minutes

Upvotes: 1

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