PHP 7.4可以设置好repo库之后直接用yum安装, 没有特殊需求不需要使用编译安装.

首先安装必要的程序包

yum install epel-release yum-utils
yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

Centos 8

dnf install https://rpms.remirepo.net/enterprise/remi-release-8.rpm

启用remi 仓库

yum-config-manager --enable remi-php74
yum update

Cnetos 8

Error: 
 Problem: cannot install the best candidate for the job
  - nothing provides libedit-devel(x86-64) needed by php72-php-devel-7.2.33-1.el8.remi.x86_64
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

# dnf config-manager --set-enabled PowerTools

You need to enable the PowerTools repository (equiv. of upstream CodeReady Linux Builder channel) which provide most of the developer stuff.

unable to install php-devel on CentOS 8

搜索可以安装的程序

yum search php74 | more
yum search php74 | egrep 'fpm|gd|mysql|memcache'


php74-php-fpm.x86_64 : PHP FastCGI Process Manager
php74-php-gd.x86_64 : A module for PHP applications for using the gd graphics
php74-php-mysqlnd.x86_64 : A module for PHP applications that use MySQL
php74-php-pecl-mysql.x86_64 : MySQL database access functions
php74-php-pecl-mysql-xdevapi.x86_64 : MySQL database access functions

安装 PHP 7.4 和必要扩展

yum install php74 php74-php-devel php74-php-fpm php74-php-gd php74-php-json php74-php-mbstring php74-php-mysqlnd php74-php-xml php74-php-xmlrpc php74-php-opcache php74-php-mcrypt

检查PHP版本

php74 --version
php74 --modules

在nginx 启用PHP

# 检查服务启动参数
cat /usr/lib/systemd/system/php74-php-fpm.service
cat /etc/systemd/system/multi-user.target.wants/php74-php-fpm.service
# 检查nginx用户组
egrep '^(user|group)' /etc/nginx/nginx.conf
# 创建sock 目录 (临时)
mkdir -p /var/run/php-fpm/

# 创建sock 目录 (永久)
vim /usr/lib/systemd/system/php74-php-fpm.service
ExecStartPre=/bin/mkdir -p /var/run/php-fpm/

systemctl edit php74-php-fpm

[Service]
ExecStartPre=/bin/mkdir -p /var/run/php-fpm/

修改php-fpm 配置

vim /etc/opt/remi/php74/php-fpm.d/www.conf

user = nginx
group = nginx

listen = /var/run/php-fpm/php-fpm.sock

listen.owner = nginx
listen.group = nginx

修改 session 文件夹所有权

chown -R nginx:nginx /var/opt/remi/php74/lib/php

修改nginx 配置文件

vim /etc/nginx/nginx.conf

server {
    .... # 其他配置参数

    location ~ \.php$ {
      fastcgi_pass   unix:/var/run/php-fpm/php-fpm.sock;
      fastcgi_index  index.php;
      fastcgi_param  SCRIPT_FILENAME $document_root/$fastcgi_script_name;
      include        fastcgi_params;
    }
}

启动php-fpm 和nginx

systemctl enable php74-php-fpm
systemctl restart php74-php-fpm
systemctl restart nginx

在你的网站目录下丢一个phpinfo.php的文件测试吧

<?php
  // test script for CentOS/RHEL 7+PHP 7.4+Nginx 
  phpinfo();
?>

Xdebug 2.9.x + VS Code

把 phpinfo 页面完整复制 https://xdebug.org/wizard.php
根据步骤安装

服务器主动与客户端通信, 远程调试客户端需要开放设置的端口

/etc/opt/remi/php74/php.ini

# find / -name "phpize"
/opt/remi/php74/root/usr/bin/phpize
# find / -name "php-config"
./configure --with-php-config=/opt/remi/php74/root/usr/bin/php-config

zend_extension = /opt/remi/php74/root/usr/lib64/php/modules/xdebug.so
[xdebug]
xdebug.auto_trace = true
xdebug.remote_enable = true
xdebug.remote_autostart = true
xdebug.remote_connect_back = true
xdebug.remote_port = 4000
xdebug.collect_vars = On
xdebug.collect_return = On
xdebug.collect_params = On
xdebug.show_local_vars = On
xdebug.default_enable = On
xdebug.max_nesting_level = 10000

vscode

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Listen for XDebug",
            "type": "php",
            "request": "launch",
            "port": 4000,
            "pathMappings": {
                "/usr/share/nginx/html": "${workspaceRoot}",
              },
        },
        {
            "name": "Launch currently open script",
            "type": "php",
            "request": "launch",
            "program": "${file}",
            "cwd": "${fileDirname}",
            "port": 9000
        }
    ]
}

Chrome 插件 (未工作
Xdebug helper

How to install PHP 7.2 on CentOS 7/RHEL 7
Cento7にphp-fpmをインストールし、nginxと連携する