DialogFlow Webhook Fulfillment PHP sdk

This is an unofficial php sdk for Dialogflow Fulfillment.

If you are looking for Detect Intent and Agent APIs php sdk have a look a the official repo.

Dialogflow: Build brand-unique, natural language interactions for bots, applications and devices.

Install:

Via composer:

$ composer require gambry/dialogflow-webhook

Usage:

In your webhook request handler:

require_once __DIR__.'/vendor/autoload.php';

if ($webhook_json = json_decode($request_body, TRUE)) {
    $request = new \DialogFlow\Model\Webhook\Request($webhook_json);
    $intent_name = $request->getResult()->getIntent()->getIntentName();
    
    if ($intent_name === 'HelloWorld') {
        $fulfillment = new \DialogFlow\Model\Fulfillment();
        $fulfillment->setText('Hi from the fulfilment!');
        
        $response = new \DialogFlow\Model\Webhook\Response();
        $response->setFulfillment($fulfillment);
        
        echo json_encode($response);
    }
}

Note: depending by the way you handle the request the library auto-loading, the $request_body variable and the way to return the $response may vary.