Updated Stateless Mode (markdown)

Stateless-Mode.md

@@ -3,7 +3,6 @@
 Configure your webserver to respond statelessly to challenges for a given account key. This requires nothing more than a one-time web server configuration change and no "moving parts".
 
 1. First get your account key thumbprint:
-
     ```
     root@ed:~# acme.sh --register-account
     [Mon Feb  6 21:40:18 CST 2017] Registering account
@@ -15,9 +14,9 @@ Remember the thumbprint in the last line:
     `
     6fXAG9VyG0IahirPEU2ZerUtItW2DHzDzD9wZaEKpqd
     `
-
+1. Configure the web server to return the account key thumbprint:
-2. Configure the nginx server to return the account key thumbprint:
+    ### NGINX
-
+    Add something similar to your `nginx.conf`:
     ```
     http {
     ...
@@ -31,7 +30,38 @@ http {
       }
     }
     ```
-
+    ### APACHE
+    Add something similar to your `httpd.conf`:
+    ```
+    LoadModule php7_module libexec/apache2/libphp7.so
+    ...
+    <VirtualHost *:80>
+        ...
+        <IfModule php7_module>
+            AddType application/x-httpd-php .php
+            AddType application/x-httpd-php-source .phps
+            <IfModule dir_module>
+                DirectoryIndex index.html index.php
+            </IfModule>
+        </IfModule>
+        ...
+        <Directory "/PATH/TO/WWW/ROOT/.well-known/acme-challenge/">
+            RewriteEngine On
+            RewriteRule "^[-_a-zA-Z0-9]+$" "index.php"
+        </Directory>
+        ...
+    </VirtualHost>
+    ...
+    ```
+    Then add `/PATH/TO/WWW/ROOT/.well-known/acme-challenge/index.php`:
+    ```php
+    <?php
+    header("Content-Type: text/plain");
+    $token = array_pop(explode('/',$_SERVER['REQUEST_URI']));
+    echo "$token.6fXAG9VyG0IahirPEU2ZerUtItW2DHzDzD9wZaEKpqd";
+    ?>
+    ```
+    _NOTE that this approach uses PHP but something similar could be done with CGI, Perl, Ruby or pretty much any other server-side language._
 3. Ok, you can issue cert now.
 
   ```