YII2 日志

YII 提供的日志写入方法：

Yii::getLogger()->log($message, $level, $category = 'application')

Yii::trace($message, $category = 'application');
Yii::error($message, $category = 'application');
Yii::warning($message, $category = 'application');
Yii::info($message, $category = 'application');

配置：
     /config/web.php

  components->log

 默认配置：

'log' => [
            'traceLevel' => YII_DEBUG ? 3 : 0,
            'targets' => [
                [
                    'class' => 'yii\log\FileTarget',
                    'levels' => ['error', 'warning'],
                ],
            ],
        ],

现修改配置如下：

 '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,
                ],
            ],
        ],

使用日志（将日志记录到log）

Yii::getLogger()->log("开始写自定义日志",Logger::LEVEL_ERROR);
Yii::trace("trace,开发调试时候记录");
Yii::error("error,错误日志");
Yii::warning("warning,警告信息");
Yii::info("info,记录操作提示");

输出自定义目录日志

// 日志文件在输出目录  @app/runtime/logs/Mylog/requests.log
Yii::info("info .... ","rhythmk");

整理于：http://www.cnblogs.com/rhythmK/p/4479246.html