Pasted

<?php
if(!$_GET['type']) {
    header('Location: /ajax/ajax.php');
}
$type = $_GET['type'];
$pdo = new PDO('mysql:host=localhost;dbname=mlok', 'root', '', array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''));
if ($type == "getnum") {
    $sql2 = "SELECT count(id) FROM `articles`";
    $query2 = $pdo->prepare($sql2);
    $query2->execute();
    $res2 = $query2->fetch(PDO::FETCH_NUM);
    echo $res2['0'];
}
if (($type == "next") || ($type == "prev")) {
    $id = $_GET['data'];
    $max = $id + 5;
    $sql = "SELECT * FROM `articles` WHERE `id` BETWEEN :idmin AND :idmax ORDER BY `created_at` DESC LIMIT 5"; 
    $query = $pdo->prepare($sql);
    $query->execute(array(':idmin' => $id, ':idmax' => $max));
    $res = $query->fetchAll(PDO::FETCH_ASSOC);
    foreach ($res as $r) {
        echo "<div class='article'>
            <h2><a href='/front/article/detail/".$r['id']."'>".$r['title']."</a></h2>".
             "<p>".$r['content'] . "</p>" .
             "<small>Napsal: " . $r['author'] . "&emsp;" . $r['created_at'] . "</small>
             </div>";
    }
}
?>