在另一个php脚本中使用joomla会计

我有一个Joomla网站，里面有一个PHP脚本。有一个按钮可以将人们重定向到PHP脚本。我想使用我的Joomla网站用户组作为访问级别。应阻止未登录的用户访问php脚本的index.php并收到诸如"您必须首先登录！"之类的消息，而已登录的用户可以访问php脚本中的index.php。

我所做的事情是在php脚本的index.php顶部包含Joomla框架，并放置函数：JFactory::getUser();。之后，我将整个index.php置于if-else条件中。if的条件是getUser()的返回值不等于"guest"。

else部分工作正常，并显示消息"you must login first"，但if部分不工作，仅显示一个空白页面，我收到#

error 500 "internal server error"

这意味着我的代码可以识别那些已登录的和未登录的。此外，当我删除我的个人代码时，它会向每个人正确显示index.php。

请帮帮我

这是代码：

<?php

define( '_JEXEC', 1 );
define( 'DS', DIRECTORY_SEPARATOR );
define('JPATH_BASE', dirname(__FILE__)."/../../../bt-travel/");
require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );
require_once ( JPATH_BASE .'/libraries/joomla/factory.php' );

$mainframe =& JFactory::getApplication('site');
$mainframe->initialise();
$user =& JFactory::getUser();
if(!$user->guest){

// *** check if database connection parameters file exists
if(!file_exists('include/base.inc.php')){
    header('location: install.php');
    exit;
}
## uncomment, if your want to prevent 'Web Page exired' message when use $submission_method = 'post';
// session_cache_limiter('private, must-revalidate');    
// *** set flag that this is a parent file
define('APPHP_EXEC', 'access allowed');

require_once('include/base.inc.php');
require_once('include/connection.php');


// *** call handler if exists
// -----------------------------------------------------------------------------
if((Application::Get('page') != '') && file_exists('page/handlers/handler_'.Application::Get('page').'.php')){
    include_once('page/handlers/handler_'.Application::Get('page').'.php');
}else if((Application::Get('customer') != '') && file_exists('customer/handlers/handler_'.Application::Get('customer').'.php')){
    if(Modules::IsModuleInstalled('customers')){    
        include_once('customer/handlers/handler_'.Application::Get('customer').'.php');
    }
}else if((Application::Get('admin') != '') && file_exists('admin/handlers/handler_'.Application::Get('admin').'.php')){
    include_once('admin/handlers/handler_'.Application::Get('admin').'.php');
}else if((Application::Get('admin') == 'export') && file_exists('admin/downloads/export.php')){
    include_once('admin/downloads/export.php');
}
// *** get site content
// -----------------------------------------------------------------------------
if(!preg_match('/booking_notify_/i', Application::Get('page'))){    
    $cachefile = '';
    if($objSettings->GetParameter('caching_allowed') && !$objLogin->IsLoggedIn()){
        $c_page        = Application::Get('page');
        $c_page_id     = Application::Get('page_id');
        $c_system_page = Application::Get('system_page');
        $c_album_code  = Application::Get('album_code');
        $c_news_id     = Application::Get('news_id');
        $c_customer    = Application::Get('customer');
        $c_admin       = Application::Get('admin');
        if(($c_page == '' && $c_customer == '' && $c_admin == '') || 
           ($c_page == 'pages' && $c_page_id != '') || 
           ($c_page == 'news' && $c_news_id != '') ||
           ($c_page == 'gallery' && $c_album_code != '')
           )
        {   
            $cachefile = md5($c_page.'-'.
                             $c_page_id.'-'.
                             $c_system_page.'-'.
                             $c_album_code.'-'.
                             $c_news_id.'-'.
                             Application::Get('lang').'-'.
                             Application::Get('currency_code')).'.cch'; 
            if($c_page == 'news' && $c_news_id != ''){
                if(!News::CacheAllowed($c_news_id)) $cachefile = '';
            }else{
                $objTempPage = new Pages((($c_system_page != '') ? $c_system_page : $c_page_id));
                if(!$objTempPage->CacheAllowed()) $cachefile = '';          
            }           
            if(start_caching($cachefile)) exit;
        }
    }
    require_once('templates/'.Application::Get('template').'/default.php');
    if($objSettings->GetParameter('caching_allowed') && !$objLogin->IsLoggedIn()) finish_caching($cachefile);
}
Application::DrawPreview();
echo "'n".'<!-- This page was generated by ApPHP Hotel Site v'.CURRENT_VERSION.' -->';
}else{
echo "you must login first";
}

?>