<?php
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;
}
}
}
?>
