What Are Constants & Variable Variables In PHP - Full PHP 8 Tutorial

In this video, you'll learn how to define & use constants in PHP in two ways. You'll also learn what variable variables are & how to use them.

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LESSON 1.3
Course Outline - https://github.com/ggelashvili..../learnphptherightway
Course Playlist - https://www.youtube.com/playli....st?list=PLr3d3QYzkw2

RESOURCES
Predefined Constants - https://www.php.net/manual/en/....reserved.constants.p
Magic Constants - https://www.php.net/manual/en/....language.constants.m

CHAPTERS
00:00 - Intro
00:59 - Using define()
01:28 - Constant Naming Rules
02:00 - Print Constants
02:23 - Check If Constant Has Been Defined
03:05 - Using Const Keyword
03:18 - Differences
04:14 - Dynamic Constant Names
04:49 - When To Use Constants
05:03 - Predefined Constants
05:38 - Magic Constants
06:14 - Variable Variables