首先需要设置 EPEL repository 仓库[root@us3 repos]# rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-7.noarch.rpm
Retrieving http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-7.noarch.rpm
Preparing... ########################################### [100%]
package epel-release-6-7.noarch is already installed然后执行命令yum install php-mcrypt