‘log’ => [ ‘traceLevel’=> YII_DEBUG ? 3 : 0, ‘targets’ => [ [ ‘class’ => ‘yii\log\FileTarget’, ‘levels’ => [‘error’, ‘warning’,’info’,’trace’], ], [ ‘class’=> ‘yii\log\FileTarget’, ‘levels’ => [‘info’], ‘categories’ => [‘rhythmk’], ‘logFile’ => ‘@app/runtime/logs/Mylog/requests.log’, ‘maxFileSize’ => 1024 * 2, ‘maxLogFiles’ => 20, ], ], ], 调用方法 Yii::info(“info …. “,”rhythmk”); //输出自定义目录日志,@app/runtime/logs/Mylog/requests.log