FirePHP 并不总是写入日志消息

我在 Bootstrap.php 中设置了记录器，如下所示：

 $logger = new Zend_Log();
    if($environment->debug == '1')
    {
        $stream = @fopen('/var/www/html/rta/rta.log','a',false);
        if(!$stream){ throw new Exception('Failed to open log stream'); }
        $writer = new Zend_Log_Writer_Stream($stream);
        $logger->addWriter($writer);
        $logger->addWriter(new Zend_Log_Writer_Firebug());
    }
    else
    {
        // Do something else
    }
    Zend_Registry::set('logger',$logger);

我设置了以下失败的代码：

$data = array(
            'config_id'      => $config->getConfigId(),
            'pass_column'    => $config->getPassColumn(),
            'filename'       => $config->getFilename(),
            'date_format'    => $config->getDateFormat(),
            'mapping_config' => $config->getMappingConfig(),
            'config_name'    => $config->getConfigName(),
            'client_id'      => $config->getClientId(),
            'description'    => $config->getDescription(),
        );

        $where = $this->getDbTable()->getAdapter()->quoteInto('config_id = ?',$config->getConfigId());
        $where = null;
        try
        {
            $this->getDbTable()->update($data,$where);
        }catch(Exception $e)
        {
            Zend_Registry::get('logger')->err('Could not update configuration.');
            Zend_Registry::get('logger')->err($e);
            return false;
        }
        return true;

我设置了两个日志编写器：Stream 和 FirePHP。 流日志编写器成功捕获并写入异常，但 FirePHP 没有执行任何操作。如果我将其他日志消息放在代码中的其他位置，例如indexAction它显示了两者都很好。我错过了什么吗？

EDIT故障代码位于我的数据库映射器中，而不是控制器中。难道是它无法访问 HTTP 标头吗？

下面的例子展示了如何让FirePHP在不使用FrontController的情况下获取它需要的头信息。

    // create the logger and log writer
    $writer = new Zend_Log_Writer_Firebug();
    $logger = new Zend_Log($writer);

    // get the wildfire channel
    $channel = Zend_Wildfire_Channel_HttpHeaders::getInstance();

    // create and set the HTTP response
    $response = new Zend_Controller_Response_Http();
    $channel->setResponse($response);

    // create and set the HTTP request
    $channel->setRequest(new Zend_Controller_Request_Http());

    // record log messages
    $logger->info('info message');
    $logger->warn('warning message');
    $logger->err('error message');

    // insert the wildfire headers into the HTTP response
    $channel->flush();

    // send the HTTP response headers
    $response->sendHeaders();
?>