The ActiveCampaign PHP Sample Code by ActiveCampaign demonstrates how to interact with the API, providing examples to test API credentials, view account details, add new list, add or edit contact, view all contacts in a list, and add new email message.
Facebook has added Codeless App Events to the latest version of the Facebook SDK. The new feature allows app owners to track interactions between app users with certain elements within an app (e.g. buttons, images, etc.). Codeless App Events is implemented through a visual tool to reduce coding.