Testing PDO Database Connection on Hosting

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

php<?php
  $host = ''; // host name
  $name = ''; // database name
  $user = ''; // username
  $pass = ''; // password
  $charset = 'utf8';
  
  $dsn = "mysql:host=$host; dbname=$name; charset=$charset";
  
  $opt = [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES => false,
  ];
  
  try {
    $pdo = new PDO($dsn, $user, $pass, $opt);
    echo 'DB is connected';
  } catch(PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
  }
?>