A class to generate Google Analytics tracking pixels ¹ for html email and "view email in the browser" pages.

This class can be used in html static generators or programs to generate tracking pixels.

It can also be used to send information directly from php to Google Analytics, for example when a transactional email is sent to a user.

The file demo.php contains some examples on how to use the class to generate pixels.

The file demo2.php contains an example where the request is sent from a php script.

Inside the ./snippets/ folder there's also example code.

1 - Modify $GAtrackingID in emailTrack.php to your Google Analytics tracking ID. In the example: UA-7467053-1

public $GAtrackingID = 'UA-7467053-1';

2 - Define the field to retrieve the user id from Engaging Networks (or other email sending providers that have similar features). In the example bellow the user ID field is cp_supporter_id

public $supporterID = '{user_data~cp_supporter_id}';

Important: Google forbids using any data that allows them to identify a user, including email, phone number or name. Please check their policies for more information.

Note: At the moment it’s not possible to use the field Supporter ID. As a temporary hack I’ve made a copy named cp_supporter_id. Unlike Supporter ID, cp_supporter_id is not automatically populated in new records. I believe this issue will be fixed in the next 3 months.