As we saw earlier in this chapter, when creating administrative pages, our custom ch2pho_get_options function can query the site's database and return the plugin configuration data that it contains. This data can be in the form of a single variable or an array of information. In this case, following the Storing user settings using arrays recipe found earlier in this chapter, an array was used and accessed to inject values in the page output when header and footer action hooks are called and when page content is being filtered.