phpcs
phpcs(代码规范)
https://juejin.im/post/5b18fdeb6fb9a01e573c3cb3
https://laravel-china.org/docs/psr/psr-2-coding-style-guide/1606
https://github.com/FriendsOfPHP/PHP-CS-Fixer
https://github.com/sebastianbergmann/phpcpd (查看复制黏贴代码)
https://laravel-china.org/articles/6181/php-series-mess-detector-for-code-specification (查看不合理的定义,消息探测器,坚持代码发出的不好的味道)