Description:
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If I call a SQL 2000 stored procedure through pdo odbc in a prepared statement it will not set the proper field order if the order does not match the parameter order in the SP.  

Reproduce code:
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2000 SQL SP (can be empty):

create procedure pdo_test2 @Param1 int, @Param2 varchar(100) as

PHP Code:
$a["param1"] = '26050';
$a["param2"] = 'test';

$sql = "exec pdo_test2 @param2 = :param2,@param1 = :param1";

$stmt = $dbh->prepare($sql);
$x = $stmt->execute($a);


Expected result:
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The column order should not matter if the names are passed

Actual result:
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If I trace in sql I see the following:
exec sp_prepare @P1 output, N'@Param1 int,@Param2 varchar(100)', N'exec pdo_test2 @param2 = @Param1,@param1 = @Param2', 1