Added Response::getStatusLine() function. This makes it more extensible and compatible with PHP 5.3.

Response.inc.php

@@ -30,6 +30,14 @@ class Response {
      */
     protected $headers;
 
+    /**
+     * The protocol. Set this to the protocol you wish to use, such as
+     * "HTTP/1.1". If unset, the class uses $_SERVER['SERVER_PROTOCOL']
+     *
+     * @var string
+     */
+    public $protocol;
+
     /**
      * HTTP status code
      * @var int
@@ -168,8 +176,7 @@ class Response {
     public function respond($headersOnly = false) {
 
         // Output the HTTP status code.
-        // TODO: Available in 5.4+. PHP.net has a good alternative in the comments.
+        header($this->getStatusLine($this->statusCode));
-        http_response_code($this->statusCode);
 
         // Output each header.
         foreach ($this->headers as $header => $value) {
@@ -183,6 +190,69 @@ class Response {
 
     } // respond()
 
+    /**
+     * Return HTTP status line, e.g. HTTP/1.1 200 OK.
+     *
+     * @return string
+     * @throws \UnexpectedValueException
+     */
+     protected function getStatusLine() {
+
+        switch ($this->statusCode) {
+            case 100: $text = 'Continue'; break;
+            case 101: $text = 'Switching Protocols'; break;
+            case 200: $text = 'OK'; break;
+            case 201: $text = 'Created'; break;
+            case 202: $text = 'Accepted'; break;
+            case 203: $text = 'Non-Authoritative Information'; break;
+            case 204: $text = 'No Content'; break;
+            case 205: $text = 'Reset Content'; break;
+            case 206: $text = 'Partial Content'; break;
+            case 300: $text = 'Multiple Choices'; break;
+            case 301: $text = 'Moved Permanently'; break;
+            case 302: $text = 'Moved Temporarily'; break;
+            case 303: $text = 'See Other'; break;
+            case 304: $text = 'Not Modified'; break;
+            case 305: $text = 'Use Proxy'; break;
+            case 400: $text = 'Bad Request'; break;
+            case 401: $text = 'Unauthorized'; break;
+            case 402: $text = 'Payment Required'; break;
+            case 403: $text = 'Forbidden'; break;
+            case 404: $text = 'Not Found'; break;
+            case 405: $text = 'Method Not Allowed'; break;
+            case 406: $text = 'Not Acceptable'; break;
+            case 407: $text = 'Proxy Authentication Required'; break;
+            case 408: $text = 'Request Time-out'; break;
+            case 409: $text = 'Conflict'; break;
+            case 410: $text = 'Gone'; break;
+            case 411: $text = 'Length Required'; break;
+            case 412: $text = 'Precondition Failed'; break;
+            case 413: $text = 'Request Entity Too Large'; break;
+            case 414: $text = 'Request-URI Too Large'; break;
+            case 415: $text = 'Unsupported Media Type'; break;
+            case 500: $text = 'Internal Server Error'; break;
+            case 501: $text = 'Not Implemented'; break;
+            case 502: $text = 'Bad Gateway'; break;
+            case 503: $text = 'Service Unavailable'; break;
+            case 504: $text = 'Gateway Time-out'; break;
+            case 505: $text = 'HTTP Version not supported'; break;
+            default:
+                throw new \UnexpectedValueException('Unknown http status code "' . $this->statusCode . '"');
+                break;
+        }
+
+        if (isset($this->protocol)) {
+            $protocol = $this->protocol;
+        } elseif (isset($_SERVER['SERVER_PROTOCOL'])) {
+            $protocol = $_SERVER['SERVER_PROTOCOL'];
+        } else {
+            $protocol = 'HTTP/1.1';
+        }
+
+        return $protocol . ' ' . $this->statusCode . ' ' . $text;
+
+    }
+
 } // Response
 
 ?>