直接输入代码：'log'=>['traceLevel'=>YII_DEBUG?3:0,'targets'=>[['class'=>'yii\log\FileTarget','levels'=>['error'],'logFile'=>'@runtime/logs/'.date('Ym').'/app.error.log',],['class'=>'yii\log\FileTarget','levels'=>['warning'],'logFile'=>'@runtime/logs/'.date('Ym').'/app.warning.log',],],],
