Every WordPress post has a permalink by default. The permalink is displayed, as expected, by the the_permalink() function. In some cases, we might need to enforce another URL to a post as its permalink, be it another link within the site or an external URL. We can provide the custom URL through a custom field…

WordPress comes with this built-in API that allows us to hook custom functionality into the rest of WordPress. We can provide that extra functionality through plugins or themes. These are called hooks and they are either actions or filters.  Actions allow us to run custom functions at a certain points of a request, while filters…