Description:
------------
 The Elements of the code or object properties will be created automatically for the server [dot] in reference and assignment for bug.

Test script:
---------------
$array = [];
      $array["a"] =& $array["b"];
      $array["b"] = 1;
      var_dump($array);

  now results in the array ["a" => 1, "b" => 1], while previously the result
  was ["b" => 1, "a" => 1];

Expected result:
----------------
/rfc/uniform_variable_syntax
/rfc/abstract_syntax_tree
Stack trace:
      #0 file.php(4): foo(42)
      #1 {main}