Solved 25. The most universally effective PHP tag style is | Chegg.com
Tim MacDonald on Twitter: "💡 TIL you can do string concatenation in a PHP constant assignment and even use other constants created in the same class. I don't know what to do
Complete Tutorials of PHP OOP Constants with Example code - DevOpsSchool.com
PHP Constants - YouTube
Use of undefined constant php 'login.tpl.php' - osTicket Forum