Displaying Errors from the save_post Hook in WordPress
James DiGioia walks through 3 potential methods of solving the problem, as well as how to implement each one, the pros and cons, and which they're best fit.
Tag: wp_error
An Introduction to the WP_Error Class
In this article, Firdaus Zahari covers the basic anatomy of the WP_Error class, how it works and how to integrate the WP_Error class within our application.