PHP parse douyin url without watermark

How to get downloadable video url from douyin?

<?php
header("Content-Type: text/html;charset=utf-8");
    if(isset($_GET["url"])){
        //HTTP headers setting
        $hdrs = array(
            'http' =>array('header' => 
             "Referer: https://v.douyin.com/" .
             "User-Agent: Mozilla/5.0 ABCD\r\n"
            ),
        );
        //Create requests
        $context = stream_context_create($hdrs);
        //Parse request get video id
        file_get_contents($_GET["url"],0,$context);
        $id=$http_response_header[6];
        $id=explode("video/",$id);
        $id=explode("/?",$id[1]);
        $id=$id[0];
        //Get video data from api
        $url="https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=".$id;
        $jsonData=file_get_contents($url,0,$context);
        $jsonData=json_decode($jsonData);
        //Get watermark play url
        $url=$jsonData->item_list[0]->video->play_addr->url_list[0];
        //Get watermark video url
        $url=str_replace("playwm","play",$url);
        //Get non watermark video url
        file_get_contents($url,0,$context);
        for($i=0;$i<sizeof($http_response_header);$i++){
            $url=$http_response_header[$i];
            if(substr($url,0,8)=="location"){
                $url=$http_response_header[$i];
            break;
            }
        }
 
        $url=str_replace("location: ","",$url);
        echo $url;
    }