In previous tutorials, we took a deep dive into the WordPress HTTP API. We even went as far as building the following plugins to demonstrate real-world examples of its usage: domain whois and social data widget; CAPTCHA protection plugin for WordPress login, registration & comment; and plugin for stopping disposable email address signup.
In this tutorial, we'll be introduced to the world of OAuth, how Twitter uses it for authorizing HTTP requests to its API and finally, building a PHP class powered by WordPress HTTP API that plugins can take advantage of when consuming Twitter.
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