Online PHP editor | refs for e6jDM

<?php function urlWhitelisted($url) { $always_allowed = array('localhost'); $whitelisted_domains = array_merge(array('somedomain.com'), $always_allowed); // partly snatched from https://gist.github.com/mjangda/1623788 // Add http if missing(to satisfy parse_url()) if (strpos($url, "/") !== 0 && strpos($url, "http") !== 0) { $url = 'http://' . $url; } $domain = parse_url($url, PHP_URL_HOST); if (strpos($url, "/") === 0 || in_array($domain, $whitelisted_domains)) { return true; } foreach ($whitelisted_domains as $whitelisted_domain) { $whitelisted_domain = '.' . $whitelisted_domain; if (strpos($domain, $whitelisted_domain) === (strlen($domain) - strlen($whitelisted_domain))) { return true; } } return false; } $domains = array('/user', 'localhost/user', 'http://localhost:4039', 'http://somedomain.com/user', 'http://google.com', 'google.com', 'somedomain.com.google.com'); foreach($domains as $domain) { var_dump(urlWhitelisted($domain)); }