From 458b861380c0d2dcdefcc2c2cf3e869cd6f36891 Mon Sep 17 00:00:00 2001
From: George-Cristian Tudoran <4936352+Gasjki@users.noreply.github.com>
Date: Mon, 12 Nov 2018 12:55:12 +0200
Subject: [PATCH] Added class constants (#21662)

* Added class constants

* fix(guide): typos
---
 guide/english/php/constants/index.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/guide/english/php/constants/index.md b/guide/english/php/constants/index.md
index e580e1364b..d49eab7deb 100644
--- a/guide/english/php/constants/index.md
+++ b/guide/english/php/constants/index.md
@@ -18,6 +18,21 @@ echo freeCodeCamp;
 Learn to code and help nonprofits
 ```
 
+Also, when you are creating classes, you can declare your own constants.
+
+```php
+class Human {
+  const TYPE_MALE = 'm';
+  const TYPE_FEMALE = 'f';
+  const TYPE_UNKNOWN = 'u'; // When user didn't select his gender
+  
+  .............
+}
+```
+
+**Note:** If you want to use those constants inside the `Human` class, you can refer them as `self::CONSTANT_NAME`. If you want to use them outside the class, you need to refer them as `Human::CONSTANT_NAME`.
+
 #### More Information:
 * <a href="https://secure.php.net/manual/en/language.constants.php" rel="nofollow">php.net constants manual</a>
 * <a href="https://secure.php.net/manual/en/function.define.php" rel="nofollow">php.net define() manual</a>
+* <a href="https://github.com/freeCodeCamp/freeCodeCamp/blob/master/guide/english/php/class/index.md" rel="nofollow">Create your first PHP class</a>