Online PHP editor | output for chNjn

<?php /** * @return string[] */ function extractEmails(string $contactString): array { if (!preg_match_all('/<(?<emails>[^>]+)>/', $contactString, $matches)) { return []; } return array_filter(array_map(static function (string $email): ?string { $sanitizedEmail = filter_var($email, FILTER_SANITIZE_EMAIL); return filter_var($sanitizedEmail, FILTER_VALIDATE_EMAIL) ? $sanitizedEmail : null; }, $matches['emails'])); } print_r(extractEmails('contact<contact@contact.com>, contact1<contact1@contact.com>'));