PHP7 出来一段时间了，今天动手试试，看看新版 PHP 性能咋样。
RPM 安装 PHP7 相应的 YUM源
1、CentOS/RHEL 7.x:
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
2、CentOS/RHEL 6.x:
rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm
YUM 安装 PHP7
yum install php70w php70w-opcache
[root@xxx-d1 /usr/local]# php -v
PHP 7.0.19 (cli) (built: May 12 2017 21:20:16) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
with Zend OPcache v7.0.19, Copyright (c) 1999-2017, by Zend Technologies
**粗体** _斜体_ [链接](http://example.com) `代码` - 列表 > 引用。你还可以使用@来通知其他用户。