php代码
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/*
* 作者: 雪狐博客
* 类用途: 实现类似于asp中的response功能
*/
final class Response {
private $headers = array();
private $output;
private $level = 0;
public function addHeader($key, $value) {
$this->headers[$key] = $value;
}
public function removeHeader($key) {
if (isset($this->headers[$key])) {
unset($this->headers[$key]);
}
}
public function redirect($url) {
header('Location: ' . $url);
exit;
}
public function setOutput($output, $level = 0) {
$this->output = $output;
$this->level = $level;
}
private function compress($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->level) {
$ouput = $this->compress($this->output, $this->level);
} else {
$ouput = $this->output;
}
if (!headers_sent()) {
foreach ($this->headers as $key => $value) {
header($key . ': ' . $value);
}
}
echo $ouput;
}
}
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