Are you keeping up with PHP versions? PHP's maintainers have kept to their annual release cycle with the 7.x branch. Already, The 7.1 branch only receives security fixes, and it will be EOL'ed by the end of 2019. Of course, hosting providers and operating systems may not keep up with the pace. See what additions are planned for the language in the 7.4 release and what's on the drawing board for 8.0. We'll also look at how to prepare to upgrade from one version to the next and using PHP_Codesniffer to find code which may need to be updated beforehand.