centos 6上yum吐血安装升级php5.6，网上找的很多不能用的yum源，只有这个试了很久终于把php5.6搞定，然后可以开始捣鼓sspanel了。
追加CentOS 6.5的epel及remi源
#rpm -Uvh http://ftp.iij.ad.jp/pub/linux/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm
#rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.r
查看源列表
#yum list –enablerepo=remi –enablerepo=remi-php56 | grep php
安装php5.6
yum install –enablerepo=remi –enablerepo=remi-php56 php php-opcache php-devel php-mbstring php-mcrypt php-mysqlnd php-phpunit-PHPUnit php-pecl-xdebug php-pecl-xhprof php-fpm
查看PHP版本
# php -v
PHP 5.6.21 (cli) (built: Apr 28 2016 07:31:16)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies
with Xdebug v2.4.0, Copyright (c) 2002-2016, by Derick Rethans
大功告成！