The default WordPress features are designed for blogs and basic content management of common sites. We need to extend WordPress features to build advanced features. Plugins provide new features and also extend WordPress' core features. However, plugins are also developed to cater to the general purposes of a specific requirement. Let's consider the Contact Form 7 plugin from the WordPress plugin repository. This plugin is designed to add a contact form to the site and send an email once the user submits the form. The core plugin only sends the email and we don't have a way to view a list of the data that was submitted by users. Let's use the following two requirements on the Contact Form 7 plugin to understand the process of customizing WordPress plugins:
- Submit the user data to a third-party service such...