CentOS/RHEL 7.x: 1， ~~~ 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，yum install php56w php56w-opcache 或 yum install php56w-fpm php56w-opcache 3， ~~~ yum install yum-plugin-replace yum replace php-common --replace-with=php56w-common ~~~ 4，最快的方式 56升级到安装PHP71 ~~~ yum install yum-plugin-replace yum replace php56w-common --replace-with=php71w-common ~~~ 5.linxu安装PHP-posix，php-pcntl , memcached扩展 ~~~ yum install -y php72w-process yum install -y php72w-pcntl yum install -y php-pecl-memcached ~~~ 6.卸载 ``` yum remove php-common -y ```