$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$db = 'blood_db';


$connection = new mysqli($dbhost,$dbuser,$dbpass,$db);

if($connection->connect_error){
    die("Server Error ".$connection->connect_error);
}
else{

    $query = ("SELECT first_name FROM accounts WHERE email_address = '".$_SESSION['username']."'");

    $obj = $connection->query($query);

    echo "Welcome ".$obj->first_name;

// printf("Welcome %s",$result->);
echo '<br><a href="logout.php">Logout</a>';