php database connection 3e 3d5 6

1$user = 'root';
2$password = 'root';
3$db = 'inventory';
4$host = 'localhost';
5$port = 8889;
6
7$link = mysqli_init();
8$success = mysqli_real_connect(
9   $link,
10   $host,
11   $user,
12   $password,
13   $db,
14   $port
15);