config.php

<?php
session_start();

define('DB_HOST', 'localhost');
define('DB_NAME', '123'); //ваша база
define('DB_USER', '123'); //ваш пользователь
define('DB_PASS', 'hT123jdsfk'); //ваш пароль

try {
    $pdo = new PDO("mysql:host=".DB_HOST.";dbname=".DB_NAME.";charset=utf8mb4", DB_USER, DB_PASS);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
    die("Ошибка подключения: " . $e->getMessage());
}

function current_user() {
    if (!isset($_SESSION['user_id'])) return null;
    global $pdo;
    $stmt = $pdo->prepare("SELECT * FROM users WHERE id = ?");
    $stmt->execute([$_SESSION['user_id']]);
    $user = $stmt->fetch(PDO::FETCH_ASSOC);

    if ($user && $user['is_banned']) {
        header('Location: ban.php');
        exit;
    }

    return $user;
}

function is_admin($user) {
    return $user && $user['is_admin'];
}
function is_verificated($user) {
    return $user && $user['is_verificated'];
}
function is_official($user) {
    return $user && $user['is_official'];
}
?>