/**
* Redirect
*
* This method prepares the response object to return an HTTP Redirect response
* to the client.
*
* @param string $url The redirect destination
* @param int $status The redirect HTTP status code
* @api
*/
public function redirect($url, $status = 302)
{
$this->setStatus($status);
$this->headers->set('Location', $url);
}
/**
* Delete HTTP cookie header
*
* This method will construct and set the HTTP `Set-Cookie` header to invalidate
* a client-side HTTP cookie. If a cookie with the same name (and, optionally, domain)
* is already set in the HTTP response, it will also be removed. Slim uses this method
* instead of PHP's native `setcookie` method. This allows more control of the HTTP header
* irrespective of PHP's native implementation's dependency on PHP versions.
*
* This method accepts the \Slim\Http\Headers object by reference as its
* first argument; this method directly modifies this object instead of
* returning a value.
*
* @param \Slim\Interfaces\Http\HeadersInterface $headers
* @param string $name
* @param array $value
* @api
*/
public function deleteHeader(HeadersInterface &$headers, $name, $value = array())
{
$crumbs = $headers->has('Set-Cookie') ? explode("\n", $headers->get('Set-Cookie')) : array();
$cookies = array();
foreach ($crumbs as $crumb) {
if (isset($value['domain']) && $value['domain']) {
$regex = sprintf('@%s=.*domain=%s@', urlencode($name), preg_quote($value['domain']));
} else {
$regex = sprintf('@%s=@', urlencode($name));
}
if (preg_match($regex, $crumb) === 0) {
$cookies[] = $crumb;
}
}
if (!empty($cookies)) {
$headers->set('Set-Cookie', implode("\n", $cookies));
} else {
$headers->remove('Set-Cookie');
}
$this->setHeader($headers, $name, array_merge(array('value' => '', 'path' => null, 'domain' => null, 'expires' => time() - 100), $value));
}
/**
* Retrieves a comma-separated string of the values for a single header.
*
* This method returns all of the header values of the given
* case-insensitive header name as a string concatenated together using
* a comma.
*
* NOTE: Not all header values may be appropriately represented using
* comma concatenation. For such headers, use getHeader() instead
* and supply your own delimiter when concatenating.
*
* If the header does not appear in the message, this method MUST return
* an empty string.
*
* @param string $name Case-insensitive header field name.
* @return string A string of values as provided for the given header
* concatenated together using a comma. If the header does not appear in
* the message, this method MUST return an empty string.
*/
public function getHeaderLine($name)
{
return implode(',', $this->headers->get($name, []));
}
/**
* Get User Agent
*
* @return string|null
* @api
*/
public function getUserAgent()
{
return $this->headers->get('HTTP_USER_AGENT');
}
