php 正则解析url 信息，支持中文，完全替代parse_ur

/**
* 解析 url 信息，支持中文，可完全替代parse_url 并且兼容原 parse_url
*
* - parse_url('https://wgx:dd@www.baidu.com:80/1?a=1')
* - parse_url('https://www.baidu.com/search#print')
* - parse_url('file:///xxx/xxx/xxx')
* - parse_url('ftp://www.baidu.com')
* - parse_url('?a=1')
* - parse_url('www.baidu.com/aa/1')
* @author Renew
*/
function parse_url($uri, $component = -1){
        preg_match('/^(?:([A-Za-z-\x{4e00}-\x{9fa5}+&@#]+):)?(\/{0,3})?(?:(\w+:\w+)@)?([0-9.\-A-Za-z-\x{4e00}-\x{9fa5}]+)?(?::(\d+))?(?:(\/[^?#]*))?(?:\?([^#]*))?(?:#(.*))?$/ui', $uri, $data);

        $scheme = isset($data[1]) ? $data[1] : null;

        $up = explode(':', isset($data[3]) ? $data[3] : null);

        $host = isset($data[4]) ? $data[4] : null;

        $port = isset($data[5]) ? $data[5] : null;

        $path = isset($data[6]) ? $data[6] : null;

        if ($path && substr($path, 0, 1) != '/') $path = '/' . $path;

        $query = isset($data[7]) ? $data[7] : null;

        $fragment = isset($data[8]) ? $data[8] : null;

        if ($scheme === 'file') {
            $path = "/{$host}{$path}";

            $host = null;
        }

        $user = (!empty($up) && isset($up[0])) ? $up[0] : null;

        $pass = (!empty($up) && isset($up[1])) ? $up[1] : null;

        $intComponent = is_numeric($component) ? (int)$component : -1;

        switch ($intComponent) {
            case PHP_URL_SCHEME:
                return $scheme;
            case PHP_URL_HOST:
                return $host;
            case PHP_URL_PORT:
                return $port;
            case PHP_URL_USER:
                return $user;
            case PHP_URL_PASS:
                return $pass;
            case PHP_URL_PATH:
                return $path;
            case PHP_URL_QUERY:
                return $query;
            case PHP_URL_FRAGMENT:
                return $fragment;
            default:
                $result = [];

                if ($scheme != null) $result['scheme'] = $scheme;

                if ($host != null) $result['host'] = $host;

                if ($port != null) $result['port'] = (int)$port;

                if ($user != null) $result['user'] = $user;

                if ($pass != null) $result['pass'] = $pass;

                if ($path != null) $result['path'] = $path;

                if ($query != null) $result['query'] = $query;

                if ($fragment != null) $result['fragment'] = $fragment;

                if ($component && is_string($component)) {
                    return isset($result[$component]) ? $result[$component] : null;
                }

                return $result;
        }
}