1.php7.4安装

rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
rpm -Uvh http://rpms.remirepo.net/enterprise/remi-release-8.rpm
yum install php74-php php74-php-fpm php74-php-phpiredis php74-php-pdo php74-php-mysql php74-php-devel php74-php-mbstring -y

2.安装nginx

yum install nginx -y

3.新增 php nginx运行账号 admin

groupadd admin
adduser admin -g admin
passwd admin

4.修改nginx运行用户为admin

vim /etc/nginx/nginx.conf
user admin;

5.修改php-fpm运行用户为admin

vim /etc/opt/remi/php74/php-fpm.d/www.conf 
user = admin
group = admin

6.启动php nginx

systemctl start  php74-php-fpm.service
systemctl start nginx.service 

参考 php74安装： https://www.cnblogs.com/alliancehacker/p/12255445.html