<?php
// {{{ includes
require_once LIBRARY_PATH . '/FirePHPCore/FirePHP.class.php' ;
// }}}

function log_message($msg, $level = 'log', $title = '')
{
    static $service = null ;
    
    if (is_null($service)) {
        $service = FLEA::getSingleton('Service_FirePHP') ;
        /* @var $firePHP FirePHP */
    }
	return $service->appendLog($msg, $level,$title) ;
}

/**
 * FirePHP 调试日志服务类 要求PHP5支持*
 */
class Service_FirePHP extends FirePHP {
	
	function __construct(){
		parent::__construct();
		
		$errorLevel = explode(',', strtolower(FLEA::getAppInf('logErrorLevel')));
        $errorLevel = array_map('trim', $errorLevel);
        $errorLevel = array_filter($errorLevel, 'trim');
        $this->_errorLevel = array();
        foreach ($errorLevel as $e) {
        	$this->_errorLevel[$e] = true;
        }
        
        // 定义不同的错误级别对应FirePHP的方法
        // 'notice, debug, warning, error, exception, log'
        $this->_mapping = array(
        	'log' => 'log' ,
        	'debug' => 'info' ,
        	'notice' => 'info' ,
        	'warning' => 'warn' ,
        	'exception' => 'error' ,
        	'error' => 'error' ,
        ) ;
        
	}
	
    /**
     * 追加日志信息
     *
     * @param string $msg
     * @param string $level
     */
    public function appendLog($msg, $level = 'log', $title = '')
    {
        $level = strtolower($level);
        if (!isset($this->_errorLevel[$level])) { return; }
        $label = $title ? "{$level}: {$title}" : $level ;
        if (isset($this->_mapping[$level])){
        	return $this->{$this->_mapping[$level]}($msg,$label) ;
        }        
		return $this->log($msg,$label) ;
    }

}

修改

demo图例