<?php final class Response { private $headers = array(); private $level = 0; private $output; public function addHeader($header) { $this->headers[] = $header; } public function redirect($url) { header('Location: ' . $url); exit; } public function setCompression($level) { $this->level = $level; } public function setOutput($output) { $this->output = $output; } private function compress($data, $level = 0) { if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false)) { $encoding = 'gzip'; } if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'x-gzip') !== false)) { $encoding = 'x-gzip'; } if (!isset($encoding)) { return $data; } if (!extension_loaded('zlib') || ini_get('zlib.output_compression')) { return $data; } if (headers_sent()) { return $data; } if (connection_status()) { return $data; } $this->addHeader('Content-Encoding: ' . $encoding); return gzencode($data, (int)$level); } public function output() { if ($this->output) { if ($this->level) { $ouput = $this->compress($this->output, $this->level); } else { $ouput = $this->output; } if (!headers_sent()) { foreach ($this->headers as $header) { header($header, true); } } echo $ouput; } } } ?>