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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_intersect_uassoc.php,v 1.5 2005/01/26 04:55:13 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace array_intersect_assoc()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

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

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

  28   * @version     $Revision: 1.5 $

  29   * @since       PHP 5

  30   * @require     PHP 4.0.6 (is_callable)

  31   */
  32  if (!function_exists('array_intersect_uassoc')) {
  33      function array_intersect_uassoc()
  34      {
  35          // Sanity check

  36          $args = func_get_args();
  37          if (count($args) < 3) {
  38              user_error('Wrong parameter count for array_intersect_ukey()', E_USER_WARNING);
  39              return;
  40          }
  41  
  42          // Get compare function

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

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

  64          $result = array();
  65          foreach ($args[0] as $k => $v) {
  66              for ($i = 0; $i < $array_count; $i++) {
  67                  $match = false;
  68                  foreach ($args[$i] as $kk => $vv) {
  69                      $compare = call_user_func_array($compare_func, array($k, $kk));
  70                      if ($compare === 0 && $v == $vv) {
  71                          $match = true;
  72                          continue 2;
  73                      }
  74                  }
  75  
  76                  if ($match === false) { 
  77                      continue 2;
  78                  }
  79              }
  80  
  81              if ($match === true) {
  82                  $result[$k] = $v;
  83              }
  84          }
  85  
  86          return $result;
  87      }
  88  }
  89  
  90  ?>