https://www.cnblogs.com/EasonJim/p/9614577.html

    删除旧php包
    yum remove php.x86_64 php-cli.x86_64 php-common.x86_64 php-gd.x86_64 php-ldap.x86_64 php-mbstring.x86_64 php-mcrypt.x86_64 php-mysql.x86_64 php-pdo.x86_64
    配置epel源
    yum install -y epel-release
    wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
    配置remi源
    rpm -ivh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
    安装php5.6.x
    yum -y install —enablerepo=remi —enablerepo=remi-php56 php php-opcache php-devel php-mbstring php-mcrypt php-mysqlnd php-gd
    安装php-fpm
    yum -y install —enablerepo=remi —enablerepo=remi-php56 php-fpm
    配置开机启动服务
    systemctl restart php-fpm
    systemctl enable php-frm
    查看是否安装成功
    ps -ef | grep php
    netstat -anp | grep 9000