diff --git a/docs/section-6-playground.html b/docs/section-6-playground.html
index 986542bc..388f96d0 100644
--- a/docs/section-6-playground.html
+++ b/docs/section-6-playground.html
@@ -21,6 +21,7 @@ permalink: playground
   <option value="html">HTML</option>
   <option value="java">Java</option>
   <option value="javascript" selected="selected">JavaScript</option>
+  <option value="php">PHP</option>
   <option value="python">Python</option>
   <option value="ruby">Ruby</option>
   <option value="rust">Rust</option>