This is a follow-up post to my previous post about readying your plugins for PHP 5.3, this time addressing PHP 5.4, 5.5 and 5.6. Also check out the next one: for PHP 7.0, 7.1, 7.2, 7.3 NOTE: This post assumes some pretty solid PHP knowledge, because all the changes listed will require adapting your code to find a new way to do whatever it was doing before. NOTE: This is not the complete official list of changes. I've edited this list down to the basics, catering mostly ...