原生php如何获取当前页面的url

原生php如何获取当前页面的url？

//php获取当前访问的完整url地址

function get_current_url(){

    $current_url='http://';

    if(isset($_SERVER['HTTPS'])&&$_SERVER['HTTPS']=='on'){

        $current_url='https://';

    }

    if($_SERVER['SERVER_PORT']!='80'){

        $current_url.=$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['REQUEST_URI'];

    }else{

        $current_url.=$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'];

    }

    return $current_url;

}

方法二：

$url  =  $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?");

    $parse = parse_url($url);

    if(isset($parse['query'])) {

            parse_str($parse['query'],$params);

            $url   =  $parse['path'].'?'.http_build_query($params);

    }