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The Options API is a set of functions that enable easy access to the database where WordPress, plugins, and themes save and fetch needed information.

Options are stored in a database table named, by default, wp_options and can be text, integers, arrays, or objects. For example, WordPress keeps in this table the title of your blog, the list of active plugins, the news articles displayed on the Dashboard, or the time to check if a new version is available.

You'll now learn how to use the functions to access, update, and save options: add_option(), update_option(), get_option(), and delete_option().