mac 升級PHP 到 7.2

whereis php 
php -v

系統預設自帶的是 PHP5.6，需要升級到最新版本 PHP7.2

brew install php72
brew info php72
brew --prefix php

中途可能要升級 xcode-select

修改 ~/.bash_profile

user:~ sl$ cat ~/.bash_profile 

# The original version is saved in .bash_profile.pysave
PATH="$(brew --prefix php)/bin:$PATH"
 

export PYTHON_ENV=development

user:~ sl$ source ~/.bash_profile 
user:~ sl$ php -v
user:~ sl$ php -v
PHP 7.2.9 (cli) (built: Aug 23 2018 02:10:05) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.9, Copyright (c) 1999-2018
 
, by Zend Technologies
user:~ sl$