";write_inc($key_file,$string,true);exit();}if(file_exists($key_file)){do{    $mkey = include $key_file;    if ($mkey=="true"){          // 如果工作    / 工作区间 //      $showtime=date("Y-m-d H:i:s");       $fp = fopen('func.txt','a');      fwrite($fp,$showtime."\n");      fclose($fp);    ///    }    elseif ($mkey=="die"){        // 如果退出      die("I am dying!");    }    sleep($interval);           // 等待$interval分钟}while(true);}elsedie($key_file." doesn't exist !");function write_inc($path,$strings,$type=false){   $path=dirname(__FILE__)."/".$path;if ($type==false)    file_put_contents($path,$strings,FILE_APPEND);else    file_put_contents($path,$strings);}?>