如何将mysql函数转换为sqlsrv？ [关闭]

$query = sqlsrv_query("select * from sessions where password='$password' AND username='$username'");
$rows = sqlsrv_num_rows($query);
if ($rows == 1) {
    $_SESSION['login_user']=$username; 
    header("location: profile.php"); 
} else {
    $error = "Username or Password is invalid";
}

Hi, I have this code but it's written in mysql and I want it to work in sqlserver so I changed mysql_query into sqlsrv_query and it didn't work properly, and I changed mysql_num_rows into sqlsrv_num_rows and it didn't work either so can anyone help me and tell me how to write them please?

You are missing the connection parameter to sqlsrv_query. While you're at it, you might as well use bind variables instead of string substitution to help guard against SQL-Injection attacks.

$serverName = "serverName\instancename";
$connectionInfo = 
    array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password" );
$conn = sqlsrv_connect( $serverName, $connectionInfo);

$params = array($username, $password);
$stmt = sqlsrv_query
            ($conn, 
            'select * from sessions where password=? AND  username=?', 
            $params);