brew install rabbitmq-c
pecl install amqp
    librabbitmq: /usr/local/Cellar/rabbitmq-c/0.9.0
pecl install igbinary
pecl install imagick

brew install libmemcached
brew install zlib
pecl install memcached
    libmemcached: /usr/local/Cellar/libmemcached/1.0.18_2/
    zlib: /usr/local/Cellar/zlib/1.2.11/