Archive for August 7th, 2007

Finding the difference between dates

I needed a quick and easy to produce a human readable difference between two dates, and came up with the follwing:

PLAIN TEXT
PHP:
  1. <?php
  2. function dateDiff($from,$to) {
  3.   $diff = $to - $from;
  4.   $info = array();
  5.   if($diff>86400) {
  6.     //one or more days
  7.     $info['d'] = ($diff - ($diff%86400))/86400;
  8.     $diff = $diff%86400;
  9.   }
  10.   if($diff>3600) {
  11.     //one or more hours
  12.     $info['h'] = ($diff - ($diff%3600))/3600;
  13.     $diff = $diff%3600;
  14.   }
  15.   if($diff>60) {
  16.     //one or more minutes
  17.     $info['m'] = ($diff - ($diff%60))/60;
  18.     $diff = $diff%60;
  19.   }
  20.   if($diff>0) {
  21.     $info['s'] = $diff;
  22.   }
  23.   $f = '';
  24.   foreach($info as $k=>$v) {
  25.     if($v>0) $f .= "$v $k, ";
  26.   }
  27.   return substr($f,0,-2);
  28. }
  29. ?>

Usage:

Just ensure that you pass it two timestamps, the first one being the date FROM when you want to calculate, the second one being where you want it calculated TO. Tip: You can get the current timestamp by using time().

PLAIN TEXT
PHP:
  1. <?php
  2. echo dateDiff(1186233948,1186480322); //2 d, 20 h, 26 m, 14 s
  3. echo dateDiff(1186233948,time()); //3 d, 1 h, 22 m, 7 s
  4. ?>

Enjoy!

2 comments August 7th, 2007

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