卸载之前php

yum -y remove php*

更改yum源

yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm

yum安装php74和扩展，根据需要自己选

指定版本号安装例如：7.2.24

先列出php的版本号：

yum list php* --showduplicates | sort -r |grep  php74

指定版本号安装：

yum -y install php74 php74-php-cli php74-common php74-php-devel php74-php-embedded php74-php-fpm php74-php-gd php74-php-mbstring php74-php-mysqlnd php74-php-opcache php74-php-pdo php74-php-xml php74-php-pecl-redis5

查看php版本号：

php74 -v

启动php：

systemctl start php74-php-fpm.service 

查看php所安装的扩展：

php74 -m

nginx配置php：

[root@VM_0_9_centos vhost]# vim love.conf
  server {
       listen       80;
       server_name  love.wyasw.com;
       root /home/deploy/nginx/html/love/;
       index index.html index.htm index.php;
        
        
       location / {
               root /home/deploy/nginx/html/love/;
               #try_files $uri $uri/ /index.php;
               try_files $uri $uri/ /index.php?$args;
       }
       location ~ .*\.(php|php5)?$  {
               #fastcgi_pass unix:/dev/shm/php-cgi.sock;
               fastcgi_pass 127.0.0.1:9000;
               fastcgi_index index.php;
               include fastcgi.conf;
               }
        
       location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|flv|ico)$ {
               expires 30d;
               }
        
       location ~ .*\.(js|css)?$ {
               expires 7d;
               }
 
   }

插入php info页面

[root@VM_0_9_centos love]# cd /home/deploy/nginx/html/love
[root@VM_0_9_centos love]# cat info.php
<?php
phpinfo();

打开info页面即可查看php版本信息，及配置文件等信息，证明安装成功

php8.0安装

yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum -y install php80 php80-php-cli php80-common php80-php-devel php80-php-embedded php80-php-fpm php80-php-gd php80-php-mbstring php80-php-mysqlnd php80-php-opcache php80-php-pdo php80-php-xml php80-php-pecl-redis5