WP Gotcha #1: Passing an empty array as a WP_Query parameter

With this article, I would like to start a series called WP Gotchas. In it, I will describe some problems you might and probably will run into as a WordPress plugin developer – if you haven’t already.

At one point I was caught off-guard by them. Maybe this post will help you if you ever run into one of these issues.

This article is split into the following sections:

  1. Problem description
  2. Why does this happen?
  3. How to solve it in my code?
  4. Takeaways from this issue
  5. Further reading