From c06b3ee62566a0b72e93ff909ff07b98b048c2d4 Mon Sep 17 00:00:00 2001
From: LogMANOriginal <LogMANOriginal@users.noreply.github.com>
Date: Mon, 5 Nov 2018 13:12:37 +0100
Subject: [PATCH] Created Constants (markdown)

---
 Constants.md | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Constants.md

diff --git a/Constants.md b/Constants.md
new file mode 100644
index 0000000..6162c43
--- /dev/null
+++ b/Constants.md
@@ -0,0 +1,21 @@
+As in most languages, constants should be written in UPPERCASE.
+
+_Notice_: This does not apply to keywords!
+
+<details><summary>Example</summary><div><br>
+
+**Bad**
+
+```PHP
+const pi = 3.14;
+```
+
+**Good**
+
+```PHP
+const PI = 3.14;
+```
+
+</div></details><br>
+
+_Reference_: [`Generic.NamingConventions.UpperCaseConstantName`](https://github.com/squizlabs/PHP_CodeSniffer/blob/master/src/Standards/Generic/Sniffs/NamingConventions/UpperCaseConstantNameSniff.php)
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