Can't login correctly, query not being executed.

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SQL-Server

PHP

I am new to PHP and this is the first try to code.
I have a login Form with Email and password,when the user submits the form ,there should be a connection to a MS SQL Server and then Check to see if the values are valid.
check1 is being displayed but everything after is not.
Is this the correct way to connect to MS sql server?Most articles on the internet are using MYSQL so i can't find much info on SQL Server.
I am desperate to know why the code isn't working,please help me guys.
UPDATE : i want to make sure i have the correct sql drivers installed. can you check it for me (links are safe ,imagesuploaded to imgur)
here's the files i downloaded from Microsoft's website: link
And here i moved the non thread safe x64 dlls to php ext directory: link
Finally i added them to the extensions in php.ini : link

anything more i need to do? because i still don't have anything related to sqlserv when i go to phpinfo() page on the server!

Here is what i have tried so Far:

What I have tried:

<form class="form-horizontal" method="post" action="Login.php">    
<input type="email" id="inputEmail" class="form-control" name="username" placeholder="Email address" required >
<input type="password" id="inputPassword" class="form-control" name="password" placeholder="Password" required >
<button class="btn btn-lg btn-primary btn-block" type="submit" name='Submit' value='Submit'>Login</button>
 </form>

Here is the PHP Code:

if (isset($_POST['Submit']))
{
    Login();
}
function Login()
{   
    $username = trim($_POST['username']);
    $password = trim($_POST['password']);
    $serverName = "TAREX-09\MSSQLSERVER"; //name of server(locally)
    $connectionOptions = array("Database" => "Insurance");
    echo 'check1';
    //Connect using Windows Authentication.
    $conn = sqlsrv_connect($serverName, $connectionOptions);
    echo 'check2';
    if (!$conn)
    {
        echo 'failed';
        //die(FormatErrors(sqlsrv_errors()));
    }

    $tsql = "SELECT EmailAddress,Password
               FROM Customer_Detail
               WHERE EmailAddress=$username AND Password=$password ";
    $getlogin = sqlsrv_query($conn, $tsql);
    if ($getlogin === false)
    {
        echo 'Login Failed';
    } else
    {
        echo 'Login Success';
    }