First

Communicate.php

<?php namespace RedisCommunucate;

class Communicate implements \Push\ICommunicated {

    private $redisClient;

    public function __construct($redisClient){
        $this->redisClient = $redisClient;
    }

    public function communicate($projectId, $data)
    {
        $toSend = array(
            "project" => $projectId
        );
        $data['data'] = json_decode($data['data']);
        $to_send = array_merge($toSend, $data);
        $to_send['data'] = array($toSend['data']);
        $this->redisClient->rpush("centrifugo.api", json_encode($toSend));
    }
}

composer.json

{
  "name": "Centrifugo test",
  "type": "project",
  "description": "Centrifugo test",
  "license": "MIT",
  "authors": [
    {
      "name": "Valeriy Zakharov",
      "email": "tw3exa@gmail.com",
      "homepage": "http://nothing-extra.ru",
      "role": "Developer"
    }
  ],
  "require": {
    "predis/predis": "^1.0"
  },
  "autoload": {
    "classmap": [
      "Push",
      "RedisCommunucate"
    ],
    "scripts": {
      "post-update-cmd": [
        "composer dump-autoload"
      ]
    }
  }
}

ICommunicated.php

<?php namespace Push;

interface ICommunicated {
    public function communicate($projectId,$data);
}

Push.php

<?php
namespace Push;

class Push{

    protected $projectSecret;
    private   $projectKey;
    private $communicate;

    public function __construct($project, $secret, ICommunicated $communicate )
    {
        $this->setProject($project, $secret)->setCommunicate($communicate);
    }

    private function setProject($projectKey, $projectSecret)
    {
        $this->projectKey = $projectKey;
        $this->projectSecret = $projectSecret;
        return $this;
    }

    public function setCommunicate(ICommunicated $communicate)
    {
        $this->communicate = $communicate;
        return $this;
    }

    public function publish($channel, $data = [])
    {
        return $this->send("publish", ["channel" => $channel, "data" => $data]);
    }

    public function send($method, $params = [])
    {
        if (empty($params)) {
            $params = new \StdClass();
        }
        $data = json_encode(["method" => $method, "params" => $params]);
        return
            $this->communicate
                ->communicate(
                    $this->projectKey,
                    ["data" => $data]
                );
    }

}