lnmp下一键切换php7与8脚本

先去/usr/local目录下，新建php7bak,php8bak两个目录，假设当下默认安装的是php7，则将php8的目录复制到php8bak目录下备用。

 shell脚本如下:

#!/bin/bash

path7=/usr/local/php7bak
path8=/usr/local/php8bak
pid=empty
if [ ! -d $path7/php ]; then
  echo 'Start converting php7 to php8..'
  if [ ! -d $path8/php ]; then
    echo 'error:php8 path is not exist';
    exit 0;
  fi
  kill `cat /usr/local/php/var/run/php-fpm.pid`
  mv /usr/local/php $path7
  mv $path8/php /usr/local
else
  echo 'Start converting php8 to php7..'
  if [ ! -d $path7/php ]; then
    echo 'error:php7 path is not exist';
    exit 0;
  fi
  kill `cat /usr/local/php/var/run/php-fpm.pid`
  mv /usr/local/php $path8
  mv $path7/php /usr/local
fi
echo 'restart php..'
/etc/init.d/php-fpm start
echo 'finished~'