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   1  <?php
   2  /**
   3  * @version $Id: case.php 10381 2008-06-01 03:35:53Z pasamio $
   4  * @package utf8
   5  * @subpackage strings
   6  */
   7  
   8  /**
   9  * Define UTF8_CASE as required
  10  */
  11  if ( !defined('UTF8_CASE') ) {
  12      define('UTF8_CASE',TRUE);
  13  }
  14  
  15  //--------------------------------------------------------------------
  16  /**
  17  * Assumes mbstring internal encoding is set to UTF-8
  18  * Wrapper around mb_strtolower
  19  * Make a string lowercase
  20  * Note: The concept of a characters "case" only exists is some alphabets
  21  * such as Latin, Greek, Cyrillic, Armenian and archaic Georgian - it does
  22  * not exist in the Chinese alphabet, for example. See Unicode Standard
  23  * Annex #21: Case Mappings
  24  * @param string
  25  * @return mixed either string in lowercase or FALSE is UTF-8 invalid
  26  * @package utf8
  27  * @subpackage strings
  28  */
  29  function utf8_strtolower($str){
  30      return mb_strtolower($str);
  31  }
  32  
  33  //--------------------------------------------------------------------
  34  /**
  35  * Assumes mbstring internal encoding is set to UTF-8
  36  * Wrapper around mb_strtoupper
  37  * Make a string uppercase
  38  * Note: The concept of a characters "case" only exists is some alphabets
  39  * such as Latin, Greek, Cyrillic, Armenian and archaic Georgian - it does
  40  * not exist in the Chinese alphabet, for example. See Unicode Standard
  41  * Annex #21: Case Mappings
  42  * @param string
  43  * @return mixed either string in lowercase or FALSE is UTF-8 invalid
  44  * @package utf8
  45  * @subpackage strings
  46  */
  47  function utf8_strtoupper($str){
  48      return mb_strtoupper($str);
  49  }