Заготовка AJAX файла

<?php
@error_reporting(E_ALL ^ E_WARNING ^ E_NOTICE);
@ini_set('error_reporting', E_ALL ^ E_WARNING ^ E_NOTICE);
@ini_set('display_errors', true);
@ini_set('html_errors', false);

define('DATALIFEENGINE', true);
define('ROOT_DIR', __DIR__ . '/../../..');
define('ENGINE_DIR', ROOT_DIR . '/engine');

if (file_exists(ENGINE_DIR . '/classes/plugins.class.php')) {
	include_once ENGINE_DIR . '/classes/plugins.class.php';
} else {
	@ini_set('pcre.recursion_limit', 10000000 );
	@ini_set('pcre.backtrack_limit', 10000000 );
	@ini_set('pcre.jit', false);
	@include_once (ENGINE_DIR . '/data/config.php');
	require_once (ENGINE_DIR . '/classes/mysql.php');
	require_once (ENGINE_DIR . '/data/dbconfig.php');

	abstract class DLEPlugins {
		public static function Check($source = '') {
			return $source;
		}
	}
}

include_once (DLEPlugins::Check(ENGINE_DIR . '/modules/functions.php'));
dle_session();

if ($_REQUEST['dle_skin']) {
	$_REQUEST['dle_skin'] = totranslit($_REQUEST['dle_skin'], false, false);
	if ($_REQUEST['dle_skin'] && is_dir( ROOT_DIR . '/templates/' . $_REQUEST['dle_skin'])) {
		$config['skin'] = $_REQUEST['dle_skin'];
	}
} elseif ($_COOKIE['dle_skin']) {
	$_COOKIE['dle_skin'] = totranslit((string)$_COOKIE['dle_skin'], false, false);
	if ($_COOKIE['dle_skin'] && is_dir(ROOT_DIR . '/templates/' . $_COOKIE['dle_skin'])) {
		$config['skin'] = $_COOKIE['dle_skin'];
	}
}

if ($config["lang_" . $config['skin']] && file_exists(DLEPlugins::Check(ROOT_DIR . '/language/' . $config["lang_" . $config['skin']] . '/website.lng'))) {
	include_once (DLEPlugins::Check(ROOT_DIR . '/language/' . $config["lang_" . $config['skin']] . '/website.lng'));
} else {
	include_once (DLEPlugins::Check(ROOT_DIR . '/language/' . $config['langs'] . '/website.lng'));
}
@header("Content-type: text/html; charset=" . $config['charset']);
setlocale(LC_NUMERIC, "C");

require_once ENGINE_DIR . '/modules/sitelogin.php';
if (!$is_logged) {
	$member_id['user_group'] = 5;
}

/* Код файла */

/*
// JSON
$html = json_encode($html, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
echo $html;
*/