php.ini opcache优化说明

https://gywbd.github.io/posts/2016/1/best-config-for-zend-opcache.html

http://www.laruence.com/2013/11/11/2928.html

参考：

一个Opcache的推荐配置

http://www.laruence.com/2013/11/11/2928.html

zend opcache的最佳设置

https://gywbd.github.io/posts/2016/1/best-config-for-zend-opcache.html

php-src/php.ini-production

https://github.com/php/php-src/blob/master/php.ini-production

How To Clear PHP’s Opcache

https://ma.ttias.be/how-to-clear-php-opcache/