centos安装php7.x

yum install epel-release

rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm

-i # Install, (will throw an error if already installed)
-U # Update (or install if not present), usually preferred over -i 
-v # verbose
-h # hash, basically just shows a pretty progress bar

## Install PHP 7.4 
yum --enablerepo=remi-php74 install php php-fpm

## Install PHP 7.3 
yum --enablerepo=remi-php73 install php php-fpm

## Install PHP 7.2 
yum --enablerepo=remi-php72 install php php-fpm

## Install PHP 7.1 
yum --enablerepo=remi-php71 install php php-fpm

## For PHP 7.4
yum --enablerepo=remi-php74 install php-xml php-soap php-xmlrpc php-mbstring php-json php-gd php-mcrypt php-mysql

## For PHP 7.3
yum --enablerepo=remi-php73 install php-xml php-soap php-xmlrpc php-mbstring php-json php-gd php-mcrypt php-mysql

## For PHP 7.2
yum --enablerepo=remi-php72 install php-xml php-soap php-xmlrpc php-mbstring php-json php-gd php-mcrypt php-mysql

## For PHP 7.1
yum --enablerepo=remi-php71 install php-xml php-soap php-xmlrpc php-mbstring php-json php-gd php-mcrypt php-mysql

$ php -v
PHP 7.2.29 (cli) (built: Mar 17 2020 11:36:18) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies

systemctl start php-fpm

systemctl enable php-fpm

vim /etc/php.ini

post_max_size = 1024M
memory_limit = 1024M
upload_max_filesize = 1024M

systemctl restart php-fpm