Step by Step Guide to Building a Keap API Integration in PHP

Hey there, fellow developer! Ready to dive into the world of Keap API integration? Let's roll up our sleeves and get our hands dirty with some PHP code. We'll be using the infusionsoft/php-sdk package to make our lives easier. So, buckle up and let's get started!

Prerequisites

Before we jump in, make sure you've got:

• A PHP environment up and running
• Composer installed (trust me, it's a lifesaver)
• A Keap developer account with API credentials

Got all that? Great! Let's move on.

Installation

First things first, let's get that SDK installed. Fire up your terminal and run:

composer require infusionsoft/php-sdk

Easy peasy, right?

Authentication

Now, let's tackle the authentication. Keap uses OAuth 2.0, so we need to set that up:

1. Get your OAuth credentials from your Keap developer account
2. Set up a callback URL in your app
3. Implement the authentication flow

Here's a quick example:

use Infusionsoft\Infusionsoft;

$infusionsoft = new Infusionsoft([
    'clientId'     => 'YOUR_CLIENT_ID',
    'clientSecret' => 'YOUR_CLIENT_SECRET',
    'redirectUri'  => 'YOUR_CALLBACK_URL',
]);

if (!$infusionsoft->getToken()) {
    echo '<a href="' . $infusionsoft->getAuthorizationUrl() . '">Click here to authorize</a>';
    exit;
}

Basic API Requests

Now that we're authenticated, let's make a simple API call:

$contacts = $infusionsoft->contacts()->all();

Boom! You've just retrieved all your contacts. How cool is that?

Common API Operations

Let's run through some everyday tasks:

Creating a Contact

$contact = $infusionsoft->contacts()->create([
    'given_name' => 'John',
    'family_name' => 'Doe',
    'email_addresses' => [
        ['email' => '[email protected]']
    ]
]);

Updating a Contact

$infusionsoft->contacts()->update($contactId, [
    'given_name' => 'Jane'
]);

Retrieving Contact Details

$contact = $infusionsoft->contacts()->find($contactId);

Deleting a Contact

$infusionsoft->contacts()->delete($contactId);

Working with Tags

Tags are super useful. Here's how to use them:

Adding Tags to a Contact

$infusionsoft->contacts()->addTags($contactId, [$tagId]);

Removing Tags from a Contact

$infusionsoft->contacts()->removeTags($contactId, [$tagId]);

Handling Campaigns

Campaigns are where the magic happens:

Adding a Contact to a Campaign

$infusionsoft->campaigns()->addContact($campaignId, $contactId);

Removing a Contact from a Campaign

$infusionsoft->campaigns()->removeContact($campaignId, $contactId);

Error Handling and Best Practices

Always wrap your API calls in try-catch blocks:

try {
    $contact = $infusionsoft->contacts()->create($data);
} catch (\Exception $e) {
    // Handle the error
}

And don't forget about rate limits! Be kind to the API.

Conclusion

And there you have it! You're now equipped to build awesome integrations with Keap's API using PHP. Remember, practice makes perfect, so keep experimenting and building cool stuff.

Want to learn more? Check out the official Keap API docs and the infusionsoft/php-sdk GitHub repo.

Now go forth and code, you magnificent developer, you!