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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_udiff.php,v 1.10 2005/01/26 04:55:13 aidan Exp $

  20  
  21  
  22  /**

  23   * Replace array_udiff()

  24   *

  25   * @category    PHP

  26   * @package     PHP_Compat

  27   * @link        http://php.net/function.array_udiff

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

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

  30   * @version     $Revision: 1.10 $

  31   * @since       PHP 5

  32   * @require     PHP 4.0.6 (is_callable)

  33   */
  34  if (!function_exists('array_udiff')) {
  35      function array_udiff()
  36      {
  37          $args = func_get_args();
  38  
  39          if (count($args) < 3) {
  40              user_error('Wrong parameter count for array_udiff()', E_USER_WARNING);
  41              return;
  42          }
  43  
  44          // Get compare function

  45          $compare_func = array_pop($args);
  46          if (!is_callable($compare_func)) {
  47              if (is_array($compare_func)) {
  48                  $compare_func = $compare_func[0] . '::' . $compare_func[1];
  49              }
  50              user_error('array_udiff() Not a valid callback ' .
  51                  $compare_func, E_USER_WARNING);
  52              return;
  53          }
  54  
  55          // Check arrays

  56          $cnt = count($args);
  57          for ($i = 0; $i < $cnt; $i++) {
  58              if (!is_array($args[$i])) {
  59                  user_error('array_udiff() Argument #' .
  60                      ($i + 1). ' is not an array', E_USER_WARNING);
  61                  return;
  62              }
  63          }
  64  
  65          $diff = array ();
  66          // Traverse values of the first array

  67          foreach ($args[0] as $key => $value) {
  68              // Check all arrays

  69              for ($i = 1; $i < $cnt; $i++) {
  70                  foreach ($args[$i] as $cmp_value) {
  71                      $result = call_user_func($compare_func, $value, $cmp_value);
  72                      if ($result === 0) {
  73                          continue 3;
  74                      }
  75                  }
  76              }
  77              $diff[$key] = $value;
  78          }
  79          return $diff;
  80      }
  81  }
  82  
  83  ?>