通过http://pecl.php.net/package/memcached查找最新的稳定版本

>cd /root/software
>wget https://launchpad.net/libmemcached/1.0/1.0.18/+download/libmemcached-1.0.18.tar.gz
>tar zxvf libmemcached-1.0.18.tar.gz
>cd libmemcached-1.0.18
>./configure && make && make install
>wget http://pecl.php.net/get/memcached-2.2.0.tgz
>cd memcached-2.2.0
>/usr/local/php/bin/phpize
Configuring for:
PHP Api Version:         20100412
Zend Module Api No:      20100525
Zend Extension Api No:   220100525
>./configure --with-php-config=/usr/local/php/bin/php-config
>make && make install
>vim /usr/local/php/etc/php.ini
添加extension="memcached.so",保存
>/usr/local/php/sbin/php-fpm -t
[14-May-2014 20:13:46] NOTICE: configuration file /usr/local/php/etc/php-fpm.conf test is successful

重启fpm就可以了