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- <?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;
- }
- }
- }
- ?>
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