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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_assoc.php,v 1.4 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_assoc

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

  28   * @version     $Revision: 1.4 $

  29   * @since       PHP 4.3.0

  30   * @require     PHP 4.0.0 (user_error)

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

  36          $args = func_get_args();
  37          if (count($args) < 2) {
  38              user_error('wrong parameter count for array_intersect_assoc()', E_USER_WARNING);
  39              return;
  40          }
  41  
  42          // Check arrays

  43          $array_count = count($args);
  44          for ($i = 0; $i !== $array_count; $i++) {
  45              if (!is_array($args[$i])) {
  46                  user_error('array_intersect_assoc() Argument #' .
  47                      ($i + 1) . ' is not an array', E_USER_WARNING);
  48                  return;
  49              }
  50          }
  51  
  52          // Compare entries

  53          $intersect = array();
  54          foreach ($args[0] as $key => $value) {
  55              $intersect[$key] = $value;
  56  
  57              for ($i = 1; $i < $array_count; $i++) {
  58                  if (!isset($args[$i][$key]) || $args[$i][$key] != $value) {
  59                      unset($intersect[$key]);
  60                      break;
  61                  }
  62              }
  63          }
  64  
  65          return $intersect;
  66      }
  67  }
  68  
  69  ?>