src/Cookie.php
public function destroy()
    {
        if (!is_null($this->getValue())) {
            if (!headers_sent()) {
                return setcookie(
                    $this->name,
                    '',
                    time() - 3600,
                    $this->path,
                    $this->host
                ); //Deletes Cookie
            } else {
                return false;
            }
        } else {
            // The cookie does not exists, there is nothing to destroy
            return true;
        }
    }
public function destroy()
    {
        if (!is_null($this->getValue())) {
            if (!headers_sent()) {
                return setcookie(
                    $this->name,
                    '',
                    time() - 3600,
                    $this->path,
                    $this->host
                ); //Deletes Cookie
            } else {
                return false;
            }
        } else {
            // The cookie does not exists, there is nothing to destroy
            return true;
        }
    }
Destroys the cookie

@return bool