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   1  <?php
   2  // +----------------------------------------------------------------------+

   3  // | PHP Version 4                                                        |

   4  // +----------------------------------------------------------------------+

   5  // | Copyright (c) 1997-2004 The PHP Group                                |

   6  // +----------------------------------------------------------------------+

   7  // | This source file is subject to version 3.0 of the PHP license,       |

   8  // | that is bundled with this package in the file LICENSE, and is        |

   9  // | available at through the world-wide-web at                           |

  10  // | http://www.php.net/license/3_0.txt.                                  |

  11  // | If you did not receive a copy of the PHP license and are unable to   |

  12  // | obtain it through the world-wide-web, please send a note to          |

  13  // | license@php.net so we can mail you a copy immediately.               |

  14  // +----------------------------------------------------------------------+

  15  // | Authors: Stephan Schmidt <schst@php.net>                             |

  16  // |          Aidan Lister <aidan@php.net>                                |

  17  // +----------------------------------------------------------------------+

  18  //

  19  // $Id: array_change_key_case.php,v 1.11 2005/12/07 21:08:57 aidan Exp $

  20  
  21  
  22  if (!defined('CASE_LOWER')) {
  23      define('CASE_LOWER', 0);
  24  }
  25  
  26  if (!defined('CASE_UPPER')) {
  27      define('CASE_UPPER', 1);
  28  }
  29  
  30  
  31  /**

  32   * Replace array_change_key_case()

  33   *

  34   * @category    PHP

  35   * @package     PHP_Compat

  36   * @link        http://php.net/function.array_change_key_case

  37   * @author      Stephan Schmidt <schst@php.net>

  38   * @author      Aidan Lister <aidan@php.net>

  39   * @version     $Revision: 1.11 $

  40   * @since       PHP 4.2.0

  41   * @require     PHP 4.0.0 (user_error)

  42   */
  43  if (!function_exists('array_change_key_case')) {
  44      function array_change_key_case($input, $case = CASE_LOWER)
  45      {
  46          if (!is_array($input)) {
  47              user_error('array_change_key_case(): The argument should be an array',
  48                  E_USER_WARNING);
  49              return false;
  50          }
  51  
  52          $output   = array ();
  53          $keys     = array_keys($input);
  54          $casefunc = ($case == CASE_LOWER) ? 'strtolower' : 'strtoupper';
  55  
  56          foreach ($keys as $key) {
  57              $output[$casefunc($key)] = $input[$key];
  58          }
  59  
  60          return $output;
  61      }
  62  }
  63  
  64  ?>