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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: Aidan Lister <aidan@php.net>                                |

  16  // +----------------------------------------------------------------------+

  17  //

  18  // $Id: array_diff_ukey.php,v 1.4 2005/01/26 04:55:13 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace array_diff_ukey()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

  26   * @link        http://php.net/function.array_diff_ukey

  27   * @author      Tom Buskens <ortega@php.net>

  28   * @version     $Revision: 1.4 $

  29   * @since       PHP 5.0.2

  30   * @require     PHP 4.0.6 (is_callable)

  31   */
  32  if (!function_exists('array_diff_ukey')) {
  33      function array_diff_ukey()
  34      {
  35          $args = func_get_args();
  36          if (count($args) < 3) {
  37              user_error('Wrong parameter count for array_diff_ukey()', E_USER_WARNING);
  38              return;
  39          }
  40  
  41          // Get compare function

  42          $compare_func = array_pop($args);
  43          if (!is_callable($compare_func)) {
  44              if (is_array($compare_func)) {
  45                  $compare_func = $compare_func[0].'::'.$compare_func[1];
  46              }
  47              user_error('array_diff_ukey() Not a valid callback ' .
  48                  $compare_func, E_USER_WARNING);
  49              return;
  50          }
  51  
  52          // Check arrays

  53          $array_count = count($args);
  54          for ($i = 0; $i !== $array_count; $i++) {
  55              if (!is_array($args[$i])) {
  56                  user_error('array_diff_ukey() Argument #' .
  57                      ($i + 1) . ' is not an array', E_USER_WARNING);
  58                  return;
  59              }
  60          }
  61  
  62          // Compare entries

  63          $result = $args[0];
  64          foreach ($args[0] as $key1 => $value1) {
  65              for ($i = 1; $i !== $array_count; $i++) {
  66                  foreach ($args[$i] as $key2 => $value2) {
  67                      if (!(call_user_func($compare_func, (string) $key1, (string) $key2))) {
  68                          unset($result[$key1]);
  69                          break 2;
  70                      }
  71                  }
  72              }
  73          }
  74  
  75          return $result;
  76      }
  77  }
  78  
  79  ?>