$connect = new mysqli("localhost", "root", "gasamul", "portfolio");

/* CHECK CONNECTION */
if (mysqli_connect_errno()) {
    printf("Connect failed: %sn", mysqli_connect_error());
    exit();
}

include 'mysql.conf.php';

if(isset($_POST['submit']) && !empty($_POST['user']) && !empty($_POST['password']))
{

    if($stmt = $con->prepare("SELECT * FROM admin WHERE user = ? AND password = ?")){ /* PREPARE YOUR QUERY  */
        $stmt->bind_param("ss", $_POST['user'], $_POST['password']); /* BIND THESE TWO VARIABLES TO THE QUERY ABOVE RESPECTIVELY; s STANDS FOR strings */
        $stmt->execute(); /* EXECUTE THE QUERY */
        $stmt->store_result(); /* STORE THE RESULT */
        $noofrows = $stmt->num_rows; /* GET THE NUMBER OF RESULT */
        if($noofrows > 0){ /* CHECK IF RESULT IS MORE THAN 0 */
            echo "Login";
        } else {
            echo "Cannot Login";
        }
        $stmt->close(); /* CLOSE THE PREPARED STATEMENT */
    }

}