yum install nginx
安装php7.3
https://kifarunix.com/installing-php-7-3-3-on-centos-7-6/
yum install epel-release
yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum install yum-utils
yum-config-manager --disable remi-php54
yum-config-manager --enable remi-php73
yum install php
yum install php-pdo.x86_64
yum install php-mbstring.x86_64 -y
yum install php-mysql.x86_64 -y
yum install php-xml.x86_64 -y
yum install php-fpm.x86_64 -y
php -v