引用定位

时间：2011-05-16 15:55:57 来源：站内作者：潘春会

false;

      //The arrays point to the same data if changes are reflected in $b
      $data = uniqid("is_ref_data_", true);
      $a[$key] =& $data;
      //There seems to be a modification ...
      $same = ((isset($b[$key])) and ($b[$key] === $data));

      //Undo our changes ...
      unset($a[$key]);

    }elseif(is_object($a)){

      //The same objects are required to have equal class names ;-)
      if(get_class($a) !== get_class($b)) return false;

      //Look for an unused property in $a
      $key = uniqid("is_ref_", true);
      while(isset($a->$key))$key = uniqid("is_ref_", true);

      //The two variables differ in content ... They can't be the same
      if(isset($b->$key)) return false;

      //The arrays point to the same data if changes are reflected in $b
      $data = uniqid("is_ref_data_", true);
      $a->$key =& $data;
      //There seems to be a modification ...
      $same = ((isset($b->$key)) and ($b->$key

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