Infusionsoft Custom Domain Affiliate Redirect Script

README.md

How to use this script

If you would like your Infusionsoft affiliate links to look like this:

https://yourdomain.com/refer/?w=ABC&p=123&a=XYZ

Create a directory on your website (for the example above, refer). In that directory, copy the code provided in this gist into a file called index.php.

Make sure you change the app_name and default_url variables in the script to reflect your own Infusionsoft application. So, for example, if your website is https://mywebsite.com and you log into Infusionsoft at https://xyz123.infusionsoft.com, then the beginning of this script should look like:

<?php

    // What is the Infusionsoft app name (the part that comes before '.infusionsoft.com')
    $app_name = 'xyz123';

    // Where should this script redirect if no affiliate variables are set?
    $default_url = 'https://mywebsite.com';
    

index.php

<?php

    // What is the Infusionsoft app name (the part that comes before '.infusionsoft.com')
    $app_name = 'abc123';

    // Where should this script redirect if no affiliate variables are set?
    $default_url = 'https://google.com/';

    /*
     * NOTE: Do not edit below this line unless you know what you're doing.
     */

    function input_with_default($key, $default = false) {
        // If a variable is set and not empty, return it.
        if(isset($_GET[$key]) && !empty($_GET[$key])) {
            return $_GET[$key];
        }
        // Otherwise, return default.
        return $default;
    }

    $code = input_with_default('w', false);
    $affiliate = input_with_default('p', false);
    $ad = input_with_default('a', '');

    // Only continue if $code and $affiliate are set. 
    // Otherwise, redirect to default URL.
    if (!$code || !$affiliate) {
        header('Location: '.$default_url);
        exit;
    }

    // Construct link and remove trailing slash if ad is blank. Redirect.
    $ref_link = rtrim('https://'.$app_name . '.infusionsoft.com/go/' . $code . '/' . $affiliate . '/' . $ad, '/');
    header('Location: '.$ref_link);
    exit;