Description:
------------
This error is occurring when I use the same parameter several times in the query.
In PHP 5.2.14, using Gentoo, it works perfectly. Already in versions 5.3.0 and 5.3.3 (using Windows on both), returns an exception.

Bug or 'feature'?

Test script:
---------------
<?php

try {
	$dbh = new PDO('mysql:/*irrelevant*/', Array(
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_EMULATE_PREPARES => false,
    ));

	$select = "SELECT * FROM PR_CLIENTE
	   WHERE DELETADO = 'N'
	     AND (NOME_CLIENTE LIKE :hash_1
	        OR ENDERECO_CLIENTE LIKE :hash_1)
	       ORDER BY ID_CLIENTE DESC
	   LIMIT :hash_2;";

	$statement = $dbh->prepare($select);
	$statement->execute(Array(
		':hash_1' => '%Anderson%',
		':hash_2' => 0,
	));

	$fetch = $statement->fetchAll(PDO::FETCH_ASSOC);
	print_r($fetch);
}
catch(PDOException $e) {
	print_r($e->getMessage());
}
?>

Expected result:
----------------
Array
(
    [0] => Array
        (
            [ID_CLIENTE] => 29
            (...)
        )

)


Actual result:
--------------
SQLSTATE[HY093]: Invalid parameter number