默认的版本太低了，手动安装有一些麻烦，想采用Yum安装的可以使用下面的方案：

1.检查当前安装的PHP包

yumlistinstalled|grepphp

如果有安装的PHP包，先删除他们

yumremovephp.x86_64php-cli.x86_64php-common.x86_64php-gd.x86_64php-ldap.x86_64php-mbstring.x86_64php-mcrypt.x86_64php-mysql.x86_64php-pdo.x86_64


CentOs6.x
rpm-Uvhhttp://mirror.webtatic.com/yum/el6/latest.rpm

yum install php70w.x86_64 php70w-cli.x86_64 php70w-common.x86_64 php70w-gd.x86_64 php70w-ldap.x86_64 php70w-mbstring.x86_64 php70w-mcrypt.x86_64 php70w-mysql.x86_64 php70w-pdo.x86_64
4.安装PHP FPM

yum install php55w-fpm
yum install php56w-fpm
yum install php70w-fpm


yum install php70w-devel

yum install gcc-c++

yum install gcc

yum installlibtool


php -dvld.active=1 test.php