کد های php برای دانلود فیلم از اینستا

[titans]

با سلام!
من یه اسکریپت پیدا کردم که فیلمی رو از اینستا دانلود میکنه اما هیچی از کد های php داخلش سر در نمیارم حتی یه تغییر کوچیک که میدم کل اسکریپت معلق میشه اگه میشه راهنمایی کنید چون میخوام مثلا هر فایلی که لینکشو پیدا کرد رو در خودش ذخیره اما نمیدونم چطوری این کارو بکنم
اسکریپت

<?php
//Grab posted url$url = $_POST['url'];
//fetching all the content from url$data = file_get_contents_curl($url);
function file_get_contents_curl($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE); //browser's user agent string (UA) curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.47 Safari/537.36'); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); $data = curl_exec($ch); curl_close($ch); return $data;}//Checking for the json data in fetched content$pattern = '/window._sharedData = (.*);/';preg_match($pattern, $data, $matches);
//checking if we got the data or notif(!$matches){ $response['status'] = 'fail'; echo json_encode($response); exit;}//getting json from content$json = $matches[1];//decoding json to process$data = json_decode($json, true);

//checking image typeif ($data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['__typename'] == "GraphImage") { $imagesdata = $data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['display_resources']; $length = count($imagesdata); $response['flag'] = 'image'; $response['image'] = $imagesdata[$length - 1]['src']; $response['status'] = 'success'; } else { //checking if multiple media //and collecting data as needed if ($data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['__typename'] == "GraphSidecar") { $counter = 0; $multipledata = $data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['edge_sidecar_to_children']['edges']; foreach ($multipledata as &$media) {
if ($media['node']['is_video'] == "true") { $response['medias'][$counter][0] = $media['node']['video_url']; $response['medias'][$counter][1] = 'video'; } else { $length = count($media['node']['display_resources']); $response['medias'][$counter][0] = $media['node']['display_resources'][$length - 1]['src']; $response['medias'][$counter][1] = 'image';
} $counter++; $response['flag'] = 'media'; } $response['status'] = 'success'; } else { if ($data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['__typename'] == "GraphVideo") { $videolink = $data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['video_url']; $response['flag'] = 'video'; $response['videourl'] = $videolink; $response['status'] = 'success'; } else { $response['status'] = 'fail'; } } }//Getting owners info$owner = $data['entry_data']['PostPage'][0]['graphql']['shortcode_media']['owner'];$response['username'] = $owner['username'];$response['full_name'] = $owner['full_name'];$response['profile_pic_url'] = $owner['profile_pic_url'];
//save media and profile
//????


//Sending dataecho json_encode($response);


?>