https://www.php.net/manual/zh/migration70.new-features.php PHP7新特性
https://www.php.net/manual/zh/migration71.new-features.php
https://www.php.net/manual/zh/migration72.new-features.php
https://www.php.net/manual/zh/migration73.new-features.php
https://www.php.net/manual/zh/migration74.new-features.php

https://www.php.net/manual/en/migration70.new-features.php
https://www.php.net/manual/en/migration71.new-features.php
https://www.php.net/manual/en/migration72.new-features.php
https://www.php.net/manual/en/migration73.new-features.php
https://www.php.net/manual/en/migration74.new-features.php

 

https://51shenyun.cn/php74/ PHP7.4新特性，OPcache将支持预加载

https://www.php.cn/topic/php7/437161.html  PHP 7.4中的预加载（Opcache Preloading）

https://www.cnblogs.com/lz0925/p/11089047.html 关于php的发展前景

https://www.cnblogs.com/chenpingzhao/p/10605712.html

https://blog.csdn.net/zjcjava/article/details/98851573 ELK 日志分析系统部署