Adding a User to Active Campaign on WordPress New User Signup

This is one of those scenarios where I couldn't find the sample code for what I needed - and no one has yet to build a good plugin for this functionality. Not even Active Campaign!!

So, if you need to send a subscriber to your Active Campaign account when they sign up as a new user on your WordPress site, then this article has you covered. This is actually more for me so I can reference this in the future again when I need it!

The code below will go directly into your functions.php file inside of your WP theme. You'll have the option of adding users to a specific list as well.

You'll need to get your API URL and API Key from your Active Campaign account.

function add_user_to_active( $user_id ){

    $user_info = get_userdata($user_id);
    $user_roles = $user_info->roles;

    // If this is a subscriber, then let's do this!
    if ( in_array( 'subscriber', $user_roles, true ) ) {

        $first_name = $user_info->first_name;
        $last_name = $user_info->last_name;
        $user_email = $user_info->user_email;

        $url = 'https://YOURURL.api-us1.com';

        $params = array(
                'api_key'      => 'YOUR_LONG_API_KEY',
                'api_action'   => 'contact_add',
                'api_output'   => 'serialize',
        );

        // here we define the data we are posting in order to perform an update
        $post = array(
                'email'                    => $user_email,
                'first_name'               => $first_name, // Optional if you don't collect this in your signup form
                'last_name'                => $last_name, // Optional if you don't collect this in your signup form
                'p[3]'                   => 3, // example list ID (REPLACE '3' WITH ACTUAL LIST ID, IE: p[5] = 5)
                'status[3]'              => 1, // 1: active, 2: unsubscribed (REPLACE '3' WITH ACTUAL LIST ID, IE: status[5] = 1)
                'instantresponders[3]' => 0, // set to 0 to if you don't want to sent instant autoresponders
        );

        // This section takes the input fields and converts them to the proper format
        $query = "";
        foreach( $params as $key => $value ) $query .= urlencode($key) . '=' . urlencode($value) . '&';
        $query = rtrim($query, '& ');

        // This section takes the input data and converts it to the proper format
        $data = "";
        foreach( $post as $key => $value ) $data .= urlencode($key) . '=' . urlencode($value) . '&';
        $data = rtrim($data, '& ');

        // clean up the url
        $url = rtrim($url, '/ ');

        // This sample code uses the CURL library for php to establish a connection,
        // submit your request, and show (print out) the response.
        if ( !function_exists('curl_init') ) die('CURL not supported. (introduced in PHP 4.0.2)');

        // If JSON is used, check if json_decode is present (PHP 5.2.0+)
        if ( $params['api_output'] == 'json' && !function_exists('json_decode') ) {
                die('JSON not supported. (introduced in PHP 5.2.0)');
        }

        // define a final API request - GET
        $api = $url . '/admin/api.php?' . $query;

        $request = curl_init($api); // initiate curl object
        curl_setopt($request, CURLOPT_HEADER, 0); // set to 0 to eliminate header info from response
        curl_setopt($request, CURLOPT_RETURNTRANSFER, 1); // Returns response data instead of TRUE(1)
        curl_setopt($request, CURLOPT_POSTFIELDS, $data); // use HTTP POST to send form data
        //curl_setopt($request, CURLOPT_SSL_VERIFYPEER, FALSE); // uncomment if you get no gateway response and are using HTTPS
        curl_setopt($request, CURLOPT_FOLLOWLOCATION, true);

        $response = (string)curl_exec($request); // execute curl post and store results in $response

        // additional options may be required depending upon your server configuration
        // you can find documentation on curl options at http://www.php.net/curl_setopt
        curl_close($request); // close curl object

        if ( !$response ) {
                die('Nothing was returned. Do you have a connection to Email Marketing server?');
        }

   } // END if is a subscriber

}

// This function is triggered whenever a new user 
// signs up for an account on your WordPress website
add_action('user_register', 'add_user_to_active', 10, 1);

So there you have it! Everytime a user is added to WordPress (as a subscriber) they will be added to a specific list in your Active Campaign account.

Side note - there is a plugin that claims to do this but in my testing it didn't work at all.