Merge pull request reactjs#26 from AndyMathys/php-server

Author: zpao

README.md

@@ -24,4 +24,9 @@ python server.py
 ruby server.rb
 ```
 
+### PHP
+```sh
+php server.php
+```
+
 And visit <http://localhost:3000/>. Try opening multiple tabs!

server.php

@@ -0,0 +1,35 @@
+<?php
+$scriptInvokedFromCli =
+    isset($_SERVER['argv'][0]) && $_SERVER['argv'][0] === 'server.php';
+
+if($scriptInvokedFromCli) {
+    echo 'starting server on port 3000' . PHP_EOL;
+    exec('php -S localhost:3000 -t public server.php');
+} else {
+    return routeRequest();
+}
+
+function routeRequest()
+{
+    $comments = file_get_contents('_comments.json');
+    switch($_SERVER["REQUEST_URI"]) {
+        case '/':
+            echo file_get_contents('./public/index.html');
+            break;
+        case '/comments.json':
+            if($_SERVER['REQUEST_METHOD'] === 'POST') {
+                $commentsDecoded = json_decode($comments, true);
+                $commentsDecoded[] = ['author'  => $_POST['author'], 
+                                      'text'    => $_POST['text']];
+
+                $comments = json_encode($commentsDecoded);
+                file_put_contents('_comments.json', $comments);
+            } 
+            header('Content-Type: application/json');
+            echo $comments;
+            break;
+        default:
+            return false;
+    }
+}
+