Testing mysqli Database Connection on Hosting

Let's now test the connection to the database via the mysqli extension using the following test code:

php<?php
  $host = ''; // host name
  $name = ''; // database name
  $user = ''; // username
  $pass = ''; // password
  
  $link = mysqli_connect($host, $user, $pass, $name);
  
  $query = 'SELECT * FROM users';
  $res = mysqli_query($link, $query) or die(mysqli_error($link));
  var_dump($res);
?>