roundshot image proxy

index.php

<?php
    require('../myfeeds/core.php');
    if (!isset($_GET['site']) or !isset($_GET['size'])) {
        print("site: roundshot subdomain chaumont, neuchatel, lacdeneuchatel, jeunesrives, nyon-tourisme, morgesregion<br>morgesregion folder: ville<br>size: full, half, quarter, oneeighth, thumbnail");
        die();
    }
    $site = $_GET['site'];
    $size = $_GET['size'];
    $folder = isset($_GET['folder']) ? $_GET['folder'] . '/' : '';
    $json = json_decode(file_get_contents("https://$site.roundshot.co/{$folder}structure.json"));
    if (isset($_GET['x']) and isset($_GET['y'])) {
        $img_url = $json->images[0]->structure->{$size}->url_tile;
        $img_url = str_replace('%x%', $_GET['x'], $img_url);
        $img_url = str_replace('%y%', $_GET['y'], $img_url);
    } else {
        $img_url = $json->images[0]->structure->{$size}->url_full;
    }
    
    $response =  get_web_page($img_url);
    header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
    header("Cache-Control: post-check=0, pre-check=0", false);
    header("Pragma: no-cache");    
    header("Content-Type: ". $response["content_type"]);
    echo $response['content'];
    
    ///%x%_%y%
?>