自定义日志文件写日志

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use yii\log\FileTarget;

$time = microtime(true);

$log = new FileTarget();

$log->logFile =  Yii::$app->getRuntimePath()."/logs/a.log‘;

$log->message[] = [‘test‘,1,‘application‘,$time];

$log->export();

/*
* [0] => message (mixed, can be a string or some complex data, such as an exception object)
* [1] => level (integer)
* [2] => category (string)
* [3] => timestamp (float, obtained by microtime(true))
* [4] => traces (array, debug backtrace, contains the application code call stacks)
*/
传递参数按照这些信息进行传递就可以了。最后记住重要的一点
$log->messages[] 别忘了加[] 

自定义日志文件写日志

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原文地址：http://www.cnblogs.com/yangyuqiu/p/5458040.html