### log_level ***** <br> 设置`Server`错误日志打印的等级，范围是`0-5`。低于`log_level`设置的日志信息不会抛出。 ~~~ $serv->set(array( 'log_level' => 1, )); ~~~ ## 级别对应 * 0 => SWOOLE\_LOG\_DEBUG * 1 => SWOOLE\_LOG\_TRACE * 2 => SWOOLE\_LOG\_INFO * 3 => SWOOLE\_LOG\_NOTICE * 4 => SWOOLE\_LOG\_WARNING * 5 => SWOOLE\_LOG\_ERROR