一 查看已安装php yum list installed | grep php 二 移除 systemctl stop php-fpm yum -y remove php yum -y remove php* 三 添加新的源 yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm 如果提示已安装 yum remove remi-release.noarch yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm 四 安装 yum -y install php74 yum -y install php74-php-bcmath php74-php-cli php74-php-common php74-php-devel php74-php-embedded php74-php-fpm php74-php-gd php74-php-intl php74-php-mbstring php74-php-mysqlnd php74-php-opcache php74-php-pdo php74-php-pear php74-php-pecl-igbinary php74-php-pecl-memcached php74-php-process php74-php-xml 五 启动 systemctl restart php74-php-fpm php74 -v