php 扩展 memcached
/usr/local/php/bin/phpize
./configure -enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-zlib-dir --with-libmemcached-dir=/usr/local/libmemcached/
make && make install
/usr/local/php/bin/phpize
./configure -enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-zlib-dir --with-libmemcached-dir=/usr/local/libmemcached/
make && make install