From 3af03e2f8e71aaf46b994d80145c8f3e105db47f Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Thu, 3 Dec 2015 17:29:46 +0100
Subject: [PATCH] Throw exception when used within the PHP builtin webserver

---
 admin.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/admin.php b/admin.php
index aebfdbf2..b233ada0 100644
--- a/admin.php
+++ b/admin.php
@@ -102,6 +102,9 @@ class AdminPlugin extends Plugin
     {
         // Only activate admin if we're inside the admin path.
         if ($this->active) {
+            if (php_sapi_name() == 'cli-server') {
+                throw new \RuntimeException('The Admin Plugin cannot run on the PHP built-in webserver. It needs Apache, Nginx or another full-featured web server.', 500);
+            }
             $this->grav['debugger']->addMessage("Admin Basic");
             $this->initializeAdmin();