如果你在网上找了好多资料还是依旧无法安装mcrypt推荐你来试试本方法！
sudo aptitude install libmcrypt-dev 或者sudo apt-get install php5-mcrypt模块安装完毕后，将mcrypt模块加载sudo php5enmod mcrypt检查：/etc/php5/apache2/conf.d/ /etc/php5/mods-available/有mcrypt.ini文件随后重启apache2sudo service apache2 restart
转自：http://zhidao.baidu.com/link?url=aup_9ce9laBPPZay9Cc_XAlvM1n8N3R816B9yOt_fW2mUPRQlX_0kkfg5aTmiOOL3BHJtKga50FOZY8AgrV1wbylweXkYMgyAvvuHGR7xiy
