title: PHP - time and filemtime issue
body: <p>I'm trying to get the difference between the current time and the filemtime in PHP.</p>
  
  <p>The time and filemtime seems to return correct values, since, when applied to the date function, these values print correct dates. The difference between the time() function and filemtime is 1 hour according to the date function. However when I'm trying to get the difference between the returned timestamp values, the difference is 215. For example, see below:</p>
  
  <p>current time = 1339599628, the date() function shows   13-06-2012 16:06:28 00
  file modif time = 1339599413, the date() function shows   13-06-2012 15:06:30 30</p>
  
  <p>This seems to be correct, but I can't see how to check the difference in seconds between these dates, since 1 hours has 3600 seconds, but the difference is only 215.</p>
  
  <p>Also, I tried the following timestamp values:
  1339599599  = 13-06-2012 15:06:59 59
  1339599600  = 13-06-2012 16:06:00 00</p>
  
  <p>So, the first timestamp values was incremented by 1, but the date gives 1 hours difference.</p>
  
  <p>Any ideas?</p>