centos6.8 升级PHP5.6 安装swoole

一 Error: xz compression not available
由于CentOS6的系统安装了epel-release-latest-7.noarch.rpm 导致在使用yum命令时出现Error: xz compression not available问题。
1 卸载epel-release-latest-7.noarch.rpm：
yum remove epel-release
2 清空epel目录：
rm -rf /var/cache/yum/x86_64/6/epel/

二 升级PHP5.6
1：
32位服务器运行如下命令
wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm

64位服务器运行如下命令
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm

2 vim /etc/yum.repos.d/remi.repo
升级到php5.6.x，那么就把[remi]和[remi-php56]部分的enabled都改为1

3 yum更新php，运行命令
yum update -y

4 检查更新后的版本
php -v

三 安装swoole
1 安装EPEL扩展源
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

2 安装GCC
yum install gcc

3 安装php-config
yum install php-devel

4 安装swoole
pecl install swoole
在php.ini添加extension=swoole.so