/**
* Sets the status code and sends the headers to the client
* @param int $statusCode HTTP response status code
* @param zibo\library\http\HeaderContainer $headers Container of the headers
* @return null
* @throws zibo\ZiboException when the output already started
* @see zibo\library\http\Header
*/
protected function sendHeaders($statusCode, HeaderContainer $headers)
{
if (!$headers->hasHeaders() && $statusCode === Response::STATUS_CODE_OK) {
return;
}
if (headers_sent($file, $line)) {
throw new ZiboException('Cannot send headers, output already started in ' . $file . ' on line ' . $line);
}
// set the status code
$protocol = 'HTTP/1.0';
if (isset($_SERVER['SERVER_PROTOCOL'])) {
$protocol = $_SERVER['SERVER_PROTOCOL'];
}
header($protocol . ' ' . $statusCode);
// set the headers
foreach ($headers as $header) {
header((string) $header, false);
}
}
/**
* Gets a HTTP header value
* @param string $name Name of the header
* @return string|array|null The value of the header, an array of values if
* the header is set multiple times, null if not set
* @see zibo\library\http\Header
*/
public function getHeader($name)
{
if (!$this->headers) {
$this->headers = new HeaderContainer();
$this->headers->setHeadersFromServerRequest();
}
if (!$this->headers->hasHeader($name)) {
return null;
}
$header = $this->headers->getHeader($name);
if (!is_array($header)) {
return $header->getValue();
}
$values = array();
foreach ($header as $h) {
$values[] = $h->getValue();
}
return $values;
}
/**
* Sets the response status code to not modified and removes illegal headers
* for such a response code
* @return null
*/
public function setNotModified()
{
$this->setStatusCode(self::STATUS_CODE_NOT_MODIFIED);
$this->setView(null);
$removeHeaders = array(Header::HEADER_ALLOW, Header::HEADER_CONTENT_ENCODING, Header::HEADER_CONTENT_LANGUAGE, Header::HEADER_CONTENT_LENGTH, Header::HEADER_CONTENT_MD5, Header::HEADER_CONTENT_TYPE, Header::HEADER_LAST_MODIFIED);
$this->headers->removeHeader($removeHeaders);
}
