【转】PHP错误处理写入日志记录

?php /** * PHP错误处理写入日志记录 * @author: lnnujxxy * @time: 2009-09-23 * //使用方法： * require './error_handler.php'; * $errorHandler = ErrorHandler::getInstance(); * $errorHandler-logFile = dirname(__FILE__).'/log.php'; * $errorHandl

/**
* PHP错误处理写入日志记录
* @author: lnnujxxy
* @time: 2009-09-23
* //使用方法：
* require './error_handler.php';
* $errorHandler = ErrorHandler::getInstance();
* $errorHandler->logFile = dirname(__FILE__).'/log.php';
* $errorHandler->level = array(E_ERROR, E_WARNING);
* 此时PHP运行有错误发生，错误日志将记录到制定日志目录（需要保证PHP有对日志所在目录操作权限）
* 注：记录错误的级别可以根据需要修改。
*/
class ErrorHandler {
public static $instance = null;
public static $var;
private static $logFile = '';
private static $level = array();

public function __construct() {

   set_error_handler(array('ErrorHandler', 'errorHandler'));
}

public function __set($var, $val) {
   self::$$var = $val;
}

public function __get($var) {
   if(isset(self::$$var)) {
      return self::$$var;
   } else {
      throw new Exception("Property $var does not exist");
   }
}

public static function getInstance(){
   if(self::$instance === null) {
      self::$instance = new self();
   }
   return self::$instance;
}

public static function errorHandler($error,$message,$file,$line) {
   if($error && in_array($error, self::$level)) {
    $log=array();
    switch($error) {
     case E_ERROR:
      $type='ERROR';
      break;
     case E_WARNING:
      $type='WARNING';
      break;
     case E_NOTICE:
      $type='NOTICE';
      break;
     default:
      $type='Unknown error type ['.$error.']';
      break;
    }
    $log[] = date('Y-m-d H:i:s', time())."\t".$type.': '.$message.' in line '.$line.' of file '.$file.', PHP '.PHP_VERSION.' ('.PHP_OS.')';
    if(function_exists('debug_backtrace')) {
     $backtrace=debug_backtrace();
     for($level=1;$level       $message='File: '.$backtrace[$level]['file'].' Line: '.$backtrace[$level]['line'].' Function: ';
      if(IsSet($backtrace[$level]['class']))
       $message.='(class '.$backtrace[$level]['class'].') ';
      if(IsSet($backtrace[$level]['type']))
       $message.=$backtrace[$level]['type'].' ';
      $message.=$backtrace[$level]['function'].'(';
      if(IsSet($backtrace[$level]['args'])) {
       for($argument=0;$argument         if($argument>0)
         $message.=', ';
        $message.=serialize($backtrace[$level]['args'][$argument]);
       }
      }
      $message.=')';
      $log[]=$message;
     }
    }
    self::writeLog(self::$logFile, $log);
   }
}

public static function writeLog($logFile, $log) {
   if(file_exists($logFile) && filesize($logFile) > 2048000) { //2M一个日志文件
    $logDir = $logFileBak = $file = '';
    $logDir = dirname($logFile);
    $file = basename($logFile);
    $logFileBak = $logDir.'/'.$file.date('Y-m-d-H-i-s', time()).'.php';
    rename($logFile, $logFileBak);
   }
   if($fp = fopen($logFile, 'a')) {
    flock($fp, 2);
    $log = is_array($log) ? $log : array($log);
    foreach($log as $tmp) {
     fwrite($fp, "\t".str_replace(array('', '?>'), '', $tmp)."\n");
    }
    fclose($fp);
   }
}
}

/*
$errorHandler = ErrorHandler::getInstance();
$errorHandler->logFile = dirname(__FILE__).'/log.php';
$errorHandler->level = array(E_ERROR, E_WARNING);
str_replace(asdasdf);
*/
?>