Connecting to the MySQL database using PDO, with error catching enabled

bettermysql-connect-withError.php

<?php
  try {
    // Open new connection, allow catching of exceptions
    $db = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME, DB_USER, DB_PASS);
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    
    // Wrap the rest of your code in the 'try' block
    // since any step in here can go wrong, and you
    // will be able to catch any exceptions.
  } catch (PDOException $e) {
    echo 'PDO exception thrown: '.$e->getMessage();
    
    // Perform error handling
    // e.g. Redirect user to a oops-we-messed-up page
  }
?>