第一步：安装remi源
yum install epel-release -y
或rpm -Uvh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh http://rpms.remirepo.net/enterprise/remi-release-7.rpm
或yum install http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
第二步：配置php7.2仓库
yum -y install yum-utils
yum-config-manager –enable remi-php72 #yum -y install yum-utils
第三步：安装PHP
yum install php 因为上一步remi配置，所以这里会指向php72
第四步：安装扩展组件
yum install php php72-php-opcache php72-php-ldap php72-php-odbc php72-php-pear php72-php-xml php72-php-xmlrpc php72-php-soap curl curl-devel php72-php-mbstring php72-php-mysqlnd php72-php-fpm php72-php-gd php72-php-xdebug php72-php-pecl-mysql php72-php-pecl-memcached php72-php-pecl-memcache php72-php-pecl-redis
第五步：安装php-fpm
yum install php72-php-fpm
systemctl restart php72-php-fpm #启动php-fpm服务
netstat -tunlp|grep 9000 #查看9000端口是否正常启动了

php的配置文件及组件的安装位置
/etc/opt/remi/php72
/etc/opt/remi/php72/php-fpm.d/*.conf
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安装xdebug
搜索相应库：yum search php|grep xdebug

yum install php72-php-pecl-xdebug

CentOS 7 provides PHP version 5.4 in its official repository

Command to install the EPEL repository configuration package:
    yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

Command to install the Remi repository configuration package:
    yum install https://rpms.remirepo.net/enterprise/remi-release-7.rpm

Command to install the yum-utils package (for the yum-config-manager command):
    yum install yum-utils

You want a single version which means replacing base packages from the distribution

Packages have the same name than the base repository, ie php-*

Some common dependencies are available in remi-safe repository, which is enabled by default

PHP version 7.2 packages are available for CentOS 7 in remi-php72 repository

Command to enable the repository:
    yum-config-manager --enable remi-php72

If the priorities plugin is enabled, ensure remi-php72 have higher priority (a lower value) than base and updates

Command to upgrade (the repository only provides PHP):
    yum update

Command to install additional packages:
    yum install php-xxx

Command to install testing packages:
    yum --enablerepo=remi-php72-test install php-xxx

Command to check the installed version and available extensions:
    php --version
    php --modules