Chat bot is designed based on `VK Callback API`

Bot working example: MyBot

Callback API works on the principle of events in any programming language - an event is initialized on the server vk, and as the handler is your server.

To not overload the server, you can select certain types of events in the configuring your community vk.

All data is transmitted in the format json.

To start, you need to create a community in vk. Then, in paragraph Community Management> API Activities> Access Keys need to generate community access key.

The next step is to deploy the bot on the server.

Tip the project from the repository and change the settings to config.php

CONFIRM_KEY - is on the tab Managing the Community> Working with the API > Callback API

    define('ACCESS_TOKEN', 'a55a5ddbcfdd8c69984fe673487ca862b6f4ad2c7d0bbd0a6540091174bd6e2332bc8e29ce27c24dec2c6');
    define('CONFIRM_KEY', 'de2a6ad9');
    define('API_VERSION', '5.74');
    define('STATUS', 'dev'); // development stage `dev` - development, `prod` - release

After that, go to the community Community Management > Works with the API> Callback API and fill out the server address and click the Confirm button. This will confirm that you are the owner of the server.

On the tab Manage community > Works with API > Callback API > Events you need to select Incoming message

Do not forget to allow messages to be sent to the community!!!

Done! The bot is working, you can send messages to the community.

To handle other types of Callback API events, add the appropriate case to the body switch

    switch ($data['type']) {
        case EVENT_CONFIRMATION:
            exit($vk->getConfirm());
        break;

        case EVENT_MESSAGE_NEW:
            include('actions/message.php');
        break;
    }

The project structure is designed to further develop and maintain

• index.php the key file to which all requests go
• config.php contains global variables
• actions / contains files with actions by type of event
• actions / message.php is responsible for the event of the new message
• lib / libraries (mostly classes)
• lib / vk.php library vk API
• lib / bot.php library with additional functions
• src / the key directory in which commands and phrases are located
• src / phrases / directory with phrases
• src / phrases / user.php phrases sent by the user
• src / phrases / bot.php phrases that the bot answers

• The incoming request is transferred to an array
• the type of action is selected via switch
• an action file is connected - action / * .php or a simple module
• the response is sent

Author: Pivovarov Sergey