Services/MetaData/classes/class.ilMDUtils.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


class ilMDUtils
{
        function _LOMDurationToArray($a_string)
        {
                $a_string = trim($a_string);
                #$pattern = '/^(PT)?(\d{1,2}H)?(\d{1,2}M)?(\d{1,2}S)?$/i';
                $pattern = '/^P(\d{1,2}M)?(\d{1,2}D)?(T(\d{1,2}H)?(\d{1,2}M)?(\d{1,2}S)?)?$/i';

                if(!preg_match($pattern,$a_string,$matches))
                {
                        return false;
                }
                // Month
                if(preg_match('/^P(\d+)M/i',$a_string,$matches))
                {
                        $months = $matches[1];
                }
                // Days
                if(preg_match('/(\d+)+D/i',$a_string,$matches))
                {
                        #var_dump("<pre>",$matches,"<pre>");
                        $days = $matches[1];
                }
                
                if(preg_match('/(\d+)+H/i',$a_string,$matches))
                {
                        #var_dump("<pre>",$matches,"<pre>");
                        $hours = $matches[1];
                }
                if(preg_match('/T(\d{1,2}H)?(\d+)M/i',$a_string,$matches))
                {
                        #var_dump("<pre>",$matches,"<pre>");
                        $min = $matches[2];
                }
                if(preg_match('/(\d+)S/i',$a_string,$matches))
                {
                        #var_dump("<pre>",$matches,"<pre>");
                        $sec = $matches[1];
                }
                
                // Hack for zero values
                if(!$months and !$days and !$hours and !$min and !$sec)
                {
                        return false;
                }
                
                return array($months,$days,$hours,$min,$sec);
        }


}