Add router script for PHP built-in server

Author: kenjis

README.md

@@ -35,17 +35,17 @@ codeigniter/
 $ composer create-project kenjis/codeigniter-composer-installer codeigniter
 ```
 
-If you want to install translations for system messages (requires shell).
+If you want to install translations for system messages (requires shell):
 
 ```
 $ bin/install-translations.sh
 ```
 
-### Run PHP built-in server
+### Run PHP built-in server (PHP 5.4 or later)
 
 ```
 $ cd /path/to/codeigniter
-$ php -S localhost:8000 -t public/
+$ php -S localhost:8000 -t public/ bin/router.php
 ```
 
 ### Update CodeIgniter

bin/router.php

@@ -0,0 +1,15 @@
+<?php
+
+$file = $_SERVER['DOCUMENT_ROOT'] . $_SERVER['SCRIPT_NAME'];
+//echo $file, PHP_EOL;
+
+if (is_file($file)) {
+    return false;
+}
+
+//$_SERVER = array_merge($_SERVER, $_ENV);
+
+$_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'] . '/' . 'index.php';
+//echo $_SERVER['SCRIPT_FILENAME'], PHP_EOL;
+
+require './index.php';