0) { $number = str_replace('(0)', '', $number); } return preg_replace('/[^0-9#+*]/', '', $number); } public static function getCleanedDomain(string $domain): string { $domain = trim($domain); if (!$domain) { return ''; } $parts = str_replace(['\\\\', '\\"'], ['\\', '"'], str_getcsv($domain, ' ')); return $parts[0]; } }