这里采用webstatic的安装源，yum安装php5.6.7。
我的系统版本CentOS6.6，那么开始安装之旅吧：
rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm yum install php56w php56w-opcache
这样就安装好了，还需要什么包，自己安装吧如：
yum install php56w-mysql yum install php56w-devel yum install php56w-fpm -y
可安装的php包
php55w mod_php, php55w-zts
php55w-bcmath
php55w-cliphp-cgi, php-pcntl, php-readline
php56w-common php-api, php-bz2, php-calendar, php-ctype, php-curl, php-date, php-ereg, php-exif, php-fileinfo, php-filter, php-ftp, php-gettext, php-gmp, php-hash, php-iconv, php-json, php-libxml, php-openssl, php-pcre, php-pecl-Fileinfo, php-pecl-phar, php-pecl-zip, php-reflection, php-session, php-shmop, php-simplexml, php-sockets, php-spl, php-tokenizer, php-zend-abi, php-zip, php-zlib
php56w-dba
php56w-devel
php56w-embedded php-embedded-devel
php56w-enchant
php56w-fpm
php56w-gd
php56w-imap
php56w-interbase php_database, php-firebird
php56w-intl
php56w-ldap
php56w-mbstring
php56w-mcrypt
php56w-mssql
php56w-mysql php-mysqli, php_database
php56w-mysqlnd php-mysqli, php_database
php56w-odbc php-pdo_odbc, php_database
php56w-opcache php55w-pecl-zendopcache
php56w-pdo
php56w-pear
php56w-pecl-apcu
php56w-pecl-gearman
php56w-pecl-geoip
php56w-pecl-imagick
php56w-pecl-memcache
php56w-pecl-xdebug
php56w-pgsql php-pdo_pgsql, php_database
php56w-phpdbg
php56w-process php-posix, php-sysvmsg, php-sysvsem, php-sysvshm
php56w-pspell
php56w-recode
php56w-snmp
php56w-soap
php56w-tidy
php56w-xmlphp-dom, php-domxml, php-wddx, php-xsl
php56w-xmlrpc