diff --git a/URL-signing.md b/URL-signing.md
index eb73f91..12a99d2 100644
--- a/URL-signing.md
+++ b/URL-signing.md
@@ -100,4 +100,13 @@ import URLSafeBase64 from 'urlsafe-base64';
 let key = 'secret key';
 let data = 'https://octodex.github.com/images/codercat.jpg';
 console.log(URLSafeBase64.encode(crypto.createHmac('sha256', key).update(data).digest()));
-```
\ No newline at end of file
+```
+
+### PHP
+
+````php
+<?php
+$key = 'test';
+$data = "https://www.google.fr/images/srpr/logo11w.png";
+echo strtr(base64_encode(hash_hmac('sha256', $data, $key, 1)), '/+' , '_-');
+````
\ No newline at end of file