Description:
------------
Just try code reproduced here. Indexed input type image returns only "Y" value in "string" but not "array" with "X" and "Y".


Reproduce code:
---------------
<form method=get>
BUG - <input type="image" src="image.gif" name="submit[4]"><br>
OK - <input type="image" src="image.gif" name="submit_auto_index[]"><br>
OK - <input type="image" src="image.gif" name="submit_single"><br>
</form>
<pre>
<?
        var_dump( $_REQUEST );
?>
</pre>


Expected result:
----------------
array(1) {
  ["submit"]=>
  array(1) {
    [4]=>
    array(2) {
     [0]=>
     string(1) "9"
     [1]=>
     string(2) "13"
    }
  }
}

Actual result:
--------------
array(1) {
  ["submit"]=>
  array(1) {
    [4]=>
    string(2) "13"
  }
}