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   1 <?php
   2 /*
   3 +-------------------------------------------------------------------------+
   4 | Copyright 2010-2011, Davide Franco                                              |
   5 |                                                                         |
   6 | This program is free software; you can redistribute it and/or           |
   7 | modify it under the terms of the GNU General Public License             |
   8 | as published by the Free Software Foundation; either version 2          |
   9 | of the License, or (at your option) any later version.                  |
  10 |                                                                         |
  11 | This program is distributed in the hope that it will be useful,         |
  12 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |
  13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |
  14 | GNU General Public License for more details.                            |
  15 +-------------------------------------------------------------------------+
  16 */
  17
  18 class TimeUtils {
  19         static public function Get_Elapsed_Time( $start_time, $end_time)
  20         {
  21                 $start = '';
  22                 $end   = '';
  23
  24                 if( $start_time == '0000-00-00 00:00:00' )
  25                         return 'N/A';
  26                 else
  27                         $start = strtotime( $start_time );
  28
  29                 if( $end_time == '0000-00-00 00:00:00' )
  30                         $end = mktime();
  31                 else
  32                         $end   = strtotime( $end_time );
  33
  34                 $diff = $end - $start;
  35
  36         $daysDiff = sprintf("%02d", floor($diff/60/60/24) );
  37         $diff -= $daysDiff*60*60*24;
  38
  39         $hrsDiff = sprintf("%02d", floor($diff/60/60) );
  40         $diff -= $hrsDiff*60*60;
  41
  42         $minsDiff = sprintf("%02d", floor($diff/60) );
  43         $diff -= $minsDiff*60;
  44         $secsDiff = sprintf("%02d", $diff );
  45
  46         if( $daysDiff > 0 )
  47                         return $daysDiff . 'day(s) ' . $hrsDiff.':' . $minsDiff . ':' . $secsDiff;
  48         else
  49                         return $hrsDiff . ':' . $minsDiff . ':' . $secsDiff;
  50         }
  51 }
  52
  53 ?>