<?php
$sql = "SELECT id, title, content, DATE_FORMAT(created_at, '%Y-%m-%d') AS created_at, type
        FROM articles
        ORDER BY created_at DESC";

$stmt = $pdo->query($sql);
$articles = $stmt->fetchAll();
echo json_encode($articles, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
?>