configure memcache php centos

wget http://pecl.php.net/get/memcache-2.1.2.tgz

tar -xvf memcache-2.1.2.tgz

cd memcache-2.1.2

phpize && ./configure --enable-memcache && make

Ref: http://www.howtoforge.com/php_memcache_centos5.0