Logger.md

logger

Symfony comes with an outside library - called Monolog - that allows you to create logs that can be stored in a variety of different places.

• 修改symfony prod.log下日志信息

    # app/config/config_prod.yml
    monolog:
        handlers:
            main:
                type: fingers_crossed
                action_level: error
                handler: nested
            nested:
                type: stream
                path: '%kernel.logs_dir%/%kernel.environment%.log'
                level: debug # 更改为error
            console:
                type: console
                process_psr_3_messages: false
  

• 简单的使用

    /**
     * @var  \Psr\Log\LoggerInterface $logger
     */
    $logger = $this->get('logger');
    $logger->alert('pay faild', $result); // $result is array
  

• 配置日志存放

    monolog:
        handlers:
            # this "file_log" key could be anything
            file_log:
                type: stream
                path: "%kernel.logs_dir%/%kernel.environment%_alert.log"
                level: alert
  

• 日志的分割

    # app/config/config_dev.yml
    monolog:
        handlers:
            main:
                type:  rotating_file
                path:  '%kernel.logs_dir%/%kernel.environment%.log'
                level: debug
                # max number of log files to keep
                # defaults to zero, which means infinite files
                max_files: 10
  

• 日志的错误级别

The LoggerInterface exposes eight methods to write logs to the eight RFC 5424 levels (debug, info, notice, warning, error, critical, alert, emergency).

https://codereviewvideos.com/course/log-log-it-s-better-than-bad-it-s-good/video/10-tips-for-a-better-symfony-debug-log