PHP LOG使用心得(2)

<?php/*** create by :xiaojiang* PHP log 類  日誌入庫功能 僅供交流學習*/class Config{   public static function getConfig (){      return array(           'LOG_LEVEL'=>75  //INFO      );   }}class Log{      private $LogFile;    private $logLevel;    const DEBUG  = 100;    const INFO   = 75;    const NOTICE = 50;    const WARNING =25;    const ERROR   = 10;    const CRITICAL = 5;        private function __construct(){}    public static function getInstance($name){        return Log::backendManager($name);    }       public static function register($app,$params){                $urlDate = parse_url($params);        if(!isset( $urlDate['scheme'])){           throw Exception('invalid log connection');        }        @include('Logger/backend'.$urlDate['scheme'].'.class.php');        $className = $urlDate['scheme'].'backend';         if(!class_exists($className)){           throw new Exception('invalid className '.$className);        }        $backObj = new $className($params);        Log::backendManager($app,$backObj);    }        private static function backendManager($name,$obj = null){               static $backends_arr;         if(!isset($backends)){              $backends = null;         }         if(isset($obj)){              $backends_arr[$name] = $obj;         }else{              if(!isset($backends_arr[$name])){                  throw new Exception("the specified {$name} was not registered ");              }              return $backends_arr[$name];         }         }    public function levelToString($logLevel){         $ret = '[unknow]';         switch ($logLevel){                case LOG::DEBUG:                     $ret = 'LOG::DEBUG';                     break;                case LOG::INFO:                     $ret = 'LOG::INFO';                     break;                case LOG::NOTICE:                     $ret = 'LOG::NOTICE';                     break;                case LOG::WARNING:                     $ret = 'LOG::WARNING';                     break;                case LOG::ERROR:                     $ret = 'LOG::ERROR';                     break;                case LOG::CRITICAL:                     $ret = 'LOG::CRITICAL';                     break;         }         return $ret;    }}try{   LOG::register('error','http://localhost?user_name=root&dbname=test&table=test&password=');}catch(Exception $e){   echo $e->getMessage();}try{    $logIns = LOG::getInstance('error');}catch(Exception $e){   echo $e->getMessage();}$logIns->LogMessage('哈哈',Log::INFO,'test');/** *  檔案 Logger/Httpbackend.class.php */class Httpbackend{    public function __construct($params){                  $Date = parse_url($params);         parse_str($Date['query'],$url_params);         $this->db = @mysql_connect($Date['host'],$url_params['user_name'],$url_params['password']);         if(!is_resource($this->db)){             throw new Exception('invalid db resource');         }         mysql_select_db($url_params['table'],$this->db);         mysql_set_charset('utf8',$this->db);          $this->logLevel = Config::getConfig('LOG_LEVEL');    }    public function LogMessage($msg, $log_level = Log::info,$module=null){                 if($log_level > $this->logLevel) return ;          $sql = "INSERT INTO test (`msg`,module,add_time)                   VALUES ('{$msg}','{$module}',unix_timestamp())";          mysql_query($sql,$this->db);                    }}?>