Zend Framework 2 Microsoft SQL Server 2008 DB connection - sql-server

Question

I tried out Zend Framework 2 skeleton application and its working fine in
Zend Server 5.6 (PHP Version 5.4.0 apache 2.2.21 MYSQL 5.0.10). But i want Zend Framework 2 to connect with MS SQL 2008. I tried the following but it doesn't work and throws exception
" An invalid parameter was passed to sqlsrv_execute. "
'db' => array(
'driver' => 'sqlsrv',
'hostname' => 'testserver\test',
'Database' => 'payroll',
'UID' => 'sa',
'PWD' => '123456'
),
whats wrong with above db array? please suggest me with correct connection string
FYI :
i have tested php 5.4 and MS SQL 2008 connection and it works fine, the following connection was established successfully.
/*
$serverName = "testserver\test"; //serverName\instanceName
$connectionInfo = array( "Database"=>"payroll", "UID"=>"sa", "PWD"=>"123456");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn ) {
echo "---------- Connection established --------------------.<br />";
$sql = "select * from users";
$stmt = sqlsrv_query($conn, $sql);
while( $row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC) ) {
echo $row['id'].", ".$row['username']."<br />";
}
} else{
echo "Connection could not be established.<br />";
die( print_r( sqlsrv_errors(), true));
}
*/

Answer 1

As you did not technically "answered" your own question, I will do it for you.
Try these connection parameters, they might work using PDO :
'db' => array(
'driver' => 'pdo',
'dsn' => 'sqlsrv:database=payroll;Server=testserver\test',
'username' => 'sa',
'password' => '123456'
),

Answer 2

In your global.php file add the below connection detail:
'db' => array(
'driver' => 'Sqlsrv',
'hostname' => 'SERVERNAME',
'Database' => 'DBNAME',
'uid' => 'username',
'pwd' => 'password',
)
To add sqlsrv driver, download it from url : http://www.microsoft.com/en-us/download/details.aspx?id=20098
Add extension in your php ini file like this and then restart apache server:
extension=php_sqlsrv_53_ts.dll