CentOS PHP 8.4 安装与升级全面指南准备工作确保系统已更新：sudo yum update -y安装EPEL仓库：sudo yum install epel-release -y安装Remi仓库：sudo yum install https://rpms.remirepo.net/enterprise/remi-release-7.rpm安装PHP 8.4方法1：通过Remi仓库安装启
