static function getFallbackUrl(RublonConfirmStrategy $strategy) { if ($url = $strategy->getFallbackUrl()) { return $url; } else { $context = $strategy->getContext(); if (!empty($context['rublonFallbackUrl'])) { return $context['rublonFallbackUrl']; } else { if (!empty($context['_wp_http_referer'])) { return $context['_wp_http_referer']; } } } }