$category_id = (int) $category_id;
        $query = $pdo->prepare('SELECT * FROM articles WHERE article_category = ? ORDER BY article_id ' . $val);
        $query->bindValue(1, $category_id);
        $query->execute();
        return $query->fetchAll();
    }
    // fetch article with id number
    public function fetch_article($id = '1')
    {
        global $pdo;
        $id = (int) $id;
        $query = $pdo->prepare("SELECT * FROM articles WHERE article_id = ?");
        $query->bindValue(1, $id);
        $query->execute();
        return $query->fetchAll();
    }
}
?>


// Simple use cms class
<?php 
$perpage = 44;
$page = '1';
$catid = '2';
if (isset($_GET['page'])) {
    $page = (int) $_GET['page'];
}
$article = new Cms();
$articles = $article->fetch_all_pagine_cat($catid, $page, $perpage);
$cat = $article->fetch_category();