Metadata

Metadata, by its very definition, is information about information. In the case of WordPress, its information associated with content in the posts table.

An example would be a Content Type called Products with a meta field for price. This field would be stored in the posts_meta table.

Given the many-to-one relationship of meta data in WordPress, your options are fairly limitless. You have have as many meta options as you wish, and you can store just about anything in there you wish.

This chapter discusses how to create admin UI for setting meta data, functions for setting and getting meta data, and the process of rendering meta data on the front end of the site.