PHP日志LOG类定义与用法示例

 'test.txt', '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(){ $cfg = Config::getConfig(); $this->logLevel = isset($cfg['LOG_LEVEL']) ? $cfg['LOG_LEVEL']:LOG::INFO; if(!isset($cfg['LOG_FILE']) && strlen($cfg['LOG_FILE'])){ throw new Exception('can\'t set file to empty'); } $this->LogFile = @fopen($cfg['LOG_FILE'],'a+'); if(!is_resource($this->LogFile)){ throw new Exception('invalid file Stream'); } } public static function getInstance(){ static $obj; if(!isset($obj)){ $obj = new Log(); } return $obj; } public function LogMessage($msg, $logLevel = Log::INFO,$module = null){ if($logLevel > $this->logLevel){ return ; } date_default_timezone_set('Asia/shanghai'); $time = strftime('%x %X',time()); $msg = str_replace("\t",'',$msg); $msg = str_replace("\n",'',$msg); $strLogLevel = $this->levelToString($logLevel); if(isset($module)){ $module = str_replace(array("\n","\t"),array("",""),$module); } $logLine = "$time\t$msg\t$strLogLevel\t$module\r\n"; fwrite($this->LogFile,$logLine); } public function levelToString($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; } } $logIns = LOG::getInstance(); //print_r($logIns); $logIns->logMessage("test",LOG::INFO,'myTest'); ?>