vixip/www/proxy.php

<?php
  require_once("../config.php");
  $url = htmlspecialchars($_GET["url"]);
  $ext = explode(".", $url);
  $ext = $ext[array_key_last($ext)];
  if ($ext == "jpg") $ext = "jpeg";

  header("Content-type: image/".$ext);

  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, "https://".$url);
  curl_setopt($ch, CURLOPT_REFERER, "https://www.pixiv.net/");
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
  curl_exec($ch);
  curl_close($ch);
?>