kafka-php's Introduction

kafka-php

kafka-php allows you to produce messages to the Apache Kafka distributed publish/subscribe messaging service.

Requirements

Minimum PHP version: 5.3.3.
Apache Kafka 0.6.x or 0.7.x.
You need to have access to your Kafka instance and be able to connect through TCP. You can obtain a copy and instructions on how to setup kafka at https://github.com/kafka-dev/kafka
The PHP Zookeeper extension is required if you want to use the Zookeeper-based consumer.

Installation

Add the lib directory to the PHP include_path and use an autoloader like the one in the examples directory (the code follows the PEAR/Zend one-class-per-file convention).

Usage

The examples directory contains an example of a Producer and a simple Consumer, and an example of the Zookeeper-based Consumer.

Example Producer:

$producer = new Kafka_Producer('localhost', 9092, Kafka_Encoder::COMPRESSION_NONE);
$messages = array('some', 'messages', 'here');
$topic = 'test';
$bytes = $producer->send($messages, $topic);

Example Consumer:

$topic         = 'test';
$partition     = 0;
$offset        = 0;
$maxSize       = 1000000;
$socketTimeout = 5;

while (true) {
    $consumer = new Kafka_SimpleConsumer('localhost', 9092, $socketTimeout, $maxSize);
    $fetchRequest = new Kafka_FetchRequest($topic, $partition, $offset, $maxSize);
    $messages = $consumer->fetch($fetchRequest);
    foreach ($messages as $msg) {
        echo "\nMessage: " . $msg->payload();
    }
    //advance the offset after consuming each MessageSet
    $offset += $messages->validBytes();
    unset($fetchRequest);
}