// 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();

http://stackoverflow.com/questions/3507165/firephp-doesnt-always-write-log-messages

The following example below shows how to make FirePHP get the header info it needs without using the FrontController.

Using FirePHP without FrontController

PHP