HomeBrew 安装 PHP7.1
$ brew update
$ brew tap homebrew/dupes
$ brew tap homebrew/php
$ brew update
$ brew install php71
一、安装常见问题：
1、找不到libphp7.so
解决方法：
$ brew info php71 //查看信息
$ brew install php71 --with-httpd24 //安装带模块
2、
解决方法：
$ xcode-select --install
二、安装成功：
演示：
bochaodeMacBook-Pro:~ MrZhao$ brew update
Already up-to-date.
bochaodeMacBook-Pro:~ MrZhao$ brew install php71 --with-httpd24
Updating Homebrew...
==> Installing php71 from homebrew/php
==> Installing dependencies for homebrew/php/php71: homebrew/apache/httpd24
==> Installing homebrew/php/php71 dependency: homebrew/apache/httpd24
==> Downloading https://homebrew.bintray.com/bottles-apache/httpd24-2.4.23_2.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring httpd24-2.4.23_2.sierra.bottle.tar.gz
==> Caveats
To have launchd start homebrew/apache/httpd24 now and restart at login:
brew services start homebrew/apache/httpd24
Or, if you don't want/need a background service you can just run:
apachectl start
==> Summary