1. 对 url 参数进行排序

    public function sortUri($uri)
    {
        $parse = [
            'scheme'=>'',
            'host'=>'',
            'user'=>'',
            'pass'=>'',
            'path'=>'',
            'query'=>'',
            'fragment'=>''
        ];
        $parse = array_merge($parse, parse_url($uri));
        parse_str($parse['query'], $query);
        ksort($query);
        $parse['query'] = http_build_query($query);

        return $this->build_url($parse);
    }

2. 逆向 parse_url 生成 url

    public function build_url($parse)
    {
        $res = '';
        if (!empty($parse['scheme']))
            $res .= $parse['scheme'] . '://';
        if (!empty($parse['user']))
            $res .= $parse['user'];
        if (!empty($parse['pass']))
            $res .= ':' . $parse['pass'];
        if (!empty($parse['user']))
            $res .= '@';
        if (!empty($parse['host']))
            $res .= $parse['host'];
        if (!empty($parse['path']))
            $res .= $parse['path'];
        if (!empty($parse['query']))
            $res .= '?' . $parse['query'];
        if (!empty($parse['fragment']))
            $res .= '#' . $parse['fragment'];

        return $res;
    }