一．先安装vim
sudo yum install vim
二.查看 gcc 版本 gcc -v
若无安装，则运行 yum install gcc-c++
三.安装php
wget https://www.php.net/distributions/php-7.4.2.tar.gz
tar -zxvf php-7.4.2.tar.gz
cd php-7.4.2/
./configure --prefix=/usr/local/php7
四，配置过程中遇到各种报错信息的处理
1，报错：Package ‘libxml-2.0‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install libxml2-devel
2,报错：Package ‘krb5‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install krb5-devel
3,报错：Package ‘openssl‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install openssl-devel
4,报错：Package ‘sqlite3‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install sqlite-devel
5,报错：Package ‘libcurl‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install libcurl-devel
6，报错：Package ‘oniguruma‘, required by ‘virtual:world‘, not found
解决:
参见:CentOS 8 安装 oniguruma 和 oniguruma-devel 一文
7,报错：Package ‘libxslt‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install libxslt-devel
8,报错：Package ‘libjpeg‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install libjpeg-devel
9,报错：Package ‘libzip‘, required by ‘virtual:world‘, not found
解决:
[root@localhost php-7.4.2]# yum install libzip-devel
10,报错：configure: error: Please reinstall the BZip2 distribution
解决:
[root@yjweb php-7.4.2]# yum -y install bzip2-devel
11,报错：Package ‘libpng‘, required by ‘virtual:world‘, not found
解决:
[root@yjweb php-7.4.2]# yum install libpng-devel
12,报错：Package ‘freetype2‘, required by ‘virtual:world‘, not found
解决:
[root@yjweb php-7.4.2]# yum install freetype-devel
五．生成文件
make
make install
到这个地方PHP已经安装成功了，下面是简化PHP语句