Validators/Url.php

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<?php

 
namespace Depage\HtmlForm\Validators;

class Url extends Validator
{
    public function validate($url, $parameters = []): bool
    {
        return (bool) filter_var(self::normalizeUrl($url), FILTER_VALIDATE_URL);
    }

    public static function normalizeUrl($url): string
    {
        if (empty($url)) {
            return "";
        }
 
        $info = parse_url(trim($url));
 
        $scheme   = isset($info['scheme']) ? $info['scheme'] . '://' : '';
        $host     = $info['host'] ?? '';
        if (!empty($host)) {
            $host = idn_to_ascii($host);
        }
        $port     = isset($info['port']) ? ':' . $info['port'] : '';
        $user     = isset($info['user']) ? rawurlencode($info['user']) : '';
        $pass     = isset($info['pass']) ? ':' . rawurlencode($info['pass']) : '';
        $pass     = ($user || $pass) ? "$pass@" : '';
        $path     = $info['path'] ?? '';
        $query    = isset($info['query']) ? '?' . $info['query'] : '';
        $fragment = isset($info['fragment']) ? '#' . $info['fragment'] : '';
 
 
        $encodedPath = implode('/', array_map('Depage\HtmlForm\Validators\Url::encodeUrlPath', explode('/', $path)));
 
        return "$scheme$user$pass$host$port$encodedPath$query$fragment";
    }

    public static function humanReadableUrl($url): string
    {
        if (empty($url)) {
            return "";
        }
        $info = parse_url(trim($url));
 
        $scheme   = isset($info['scheme']) ? $info['scheme'] . '://' : '';
        $host     = $info['host'] ?? '';
        if (!empty($host)) {
            $host = idn_to_utf8($host);
        }
        $port     = isset($info['port']) ? ':' . $info['port'] : '';
        $user     = isset($info['user']) ? rawurldecode($info['user']) : '';
        $pass     = isset($info['pass']) ? ':' . rawurldecode($info['pass']) : '';
        $pass     = ($user || $pass) ? "$pass@" : '';
        $path     = $info['path'] ?? '';
        $query    = isset($info['query']) ? '?' . rawurldecode($info['query']) : '';
        $fragment = isset($info['fragment']) ? '#' . rawurldecode($info['fragment']) : '';
 
        return "$scheme$user$pass$host$port$path$query$fragment";
    }

    protected static function encodeUrlPath($path): string
    {
        if (rawurlencode($path) != str_replace(['%','+'], ['%25','%2B'], $path)) {
            $path = rawurlencode($path);
        }
 
        return $path;
    }
}