Drill 12: Write a test — PDO and SQL

<?php
$pdo = new PDO('mysql:host=localhost;dbname=edubyte;charset=utf8mb4', 'app', 'secret', [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
]);

$stmt = $pdo->prepare('SELECT title FROM lessons WHERE course_slug = :course ORDER BY title');
$stmt->execute(['course' => 'css']);
$titles = $stmt->fetchAll();

print_r($titles);