system/core/utf8/strrpos.php

   1 <?php defined('SYSPATH') OR die('No direct access allowed.');
   2 /**
   3  * utf8::strrpos
   4  *
   5  * @package    Core
   6  * @author     Kohana Team
   7  * @copyright  (c) 2007 Kohana Team
   8  * @copyright  (c) 2005 Harry Fuecks
   9  * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
  10  */
  11 function _strrpos($str, $search, $offset = 0)
  12 {
  13         $offset = (int) $offset;
  14
  15         if (SERVER_UTF8)
  16                 return mb_strrpos($str, $search, $offset);
  17
  18         if (utf8::is_ascii($str) AND utf8::is_ascii($search))
  19                 return strrpos($str, $search, $offset);
  20
  21         if ($offset == 0)
  22         {
  23                 $array = explode($search, $str, -1);
  24                 return isset($array[0]) ? utf8::strlen(implode($search, $array)) : FALSE;
  25         }
  26
  27         $str = utf8::substr($str, $offset);
  28         $pos = utf8::strrpos($str, $search);
  29         return ($pos === FALSE) ? FALSE : $pos + $offset;
  30 }