Quick Tip: Check to See if a Slug Exists in WordPress
Recently I was doing some work where I was importing RSS entries into a Custom Post Type in WordPress. Since there were no common IDs between the feed and WordPress, to prevent duplicate entries I tried comparing titles. This also proved to be an issue as titles aren’t always unique, and they weren’t in this case. I settled on comparing slugs; WordPress creates a unique slug for each post from the title, and there’s a way to know what that slug is going to be before the post is added.