Julka Grodel is a Senior Software Engineer at AddThis and has been working with CMSs for over 10 years.

Recently the recommended version of PHP for WordPress increased to PHP7, while still supporting PHP 5.2.4. That’s over 9 years of PHP! PHP7 is the first major release since PHP5 and includes backward incompatible changes that may change the way your code works or throw errors on your customer’s site where you’ve never seen them before. Let’s talk about important changes in variable handing, error handling, changed functions, removed functions and their alternatives, and more.