<?php
  require_once 'login.php';

  try
  {
    $pdo = new PDO($attr, $user, $pass, $opts);
  }
  catch (PDOException $e)
  {
    throw new PDOException($e->getMessage(), (int)$e->getCode());
  }

  $query  = "UPDATE cats SET name='Charlie' WHERE name='Charly'";
  $result = $pdo->query($query);
?>