php多版本环境变量设置
标签（空格分隔）： linux
vim /etc/profile
PATH=/usr/local/php/bin:$PATH
alias php7.3.3='/usr/local/php7.3.3/bin/php'
alias php5.6.2='/usr/local/php5.6.2/bin/php'
source /etc/profile标签（空格分隔）： linux
vim /etc/profile
PATH=/usr/local/php/bin:$PATH
alias php7.3.3='/usr/local/php7.3.3/bin/php'
alias php5.6.2='/usr/local/php5.6.2/bin/php'
source /etc/profile