/**
* Deletes a cookie with the given name.
*
* @param string $name
* @param CookieMetadata $metadata
* @return void
* @throws FailureToSendException If cookie couldn't be sent to the browser.
* If this exception isn't thrown, there is still no guarantee that the browser
* received and accepted the request to delete this cookie.
* @throws InputException If the cookie name is empty or contains invalid characters.
*/
public function deleteCookie($name, CookieMetadata $metadata = null)
{
$metadataArray = $this->scope->getCookieMetadata($metadata)->__toArray();
// explicitly set an expiration time in the metadataArray.
$metadataArray[PhpCookieManager::KEY_EXPIRE_TIME] = PhpCookieManager::EXPIRE_NOW_TIME;
$this->checkAbilityToSendCookie($name, '');
// cookie value set to empty string to delete from the remote client
$this->setCookie($name, '', $metadataArray);
// Remove the cookie
unset($_COOKIE[$name]);
}
