producer and consumer client for kafka 0.8+
1. modify config.m4 : /path/to/librdkafka
2./path/to/phpize
3../configure --with-kafka
4.make && make install
5./path/to/kafka/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 3 --partitions 1 --topic fds
6./path/to/php send.php
7./path/to/php recv.php