Yii2 中日志的记录

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Yii2自带日志记录，但用起来感觉比较不是很顺手，故自己封装了个方法，如下：

 /**

      * 记录日志

      *

      * @param type $msg

      * @time 2015年8月31日17:46:20

      * @author rentingshuang <tingshuang@rrkd.cn>

      */

     public static function log($msg = '', $fileName = '', $dir = '') {

         $directory = date ( 'Y-m-d' );

         $fileName = ! empty ( $fileName ) ? ($fileName . '.log') : ($directory . 'app.log');

         if (! empty ( $dir )) {

             $directory .= DIRECTORY_SEPARATOR . $dir;

         }

         $log = new FileTarget ();

         if (! empty ( Yii::$app->params ['LogDir'] )) {

             $log->logFile = Yii::$app->params ['LogDir'] . DIRECTORY_SEPARATOR . $directory . DIRECTORY_SEPARATOR . $fileName;

         } else {

             $log->logFile = Yii::$app->getRuntimePath () . DIRECTORY_SEPARATOR . 'logs' . DIRECTORY_SEPARATOR . $directory . DIRECTORY_SEPARATOR . $fileName;

         }

         $log->messages [] = [

                 $msg

         ];

         $log->export ();

     }