$url = "http://www.overpass-api.de/api/xapi?*[bbox=".$json["bbox"]["lng"].",".$json["bbox"]["lat"].",".$json["bbox"]["lng_b"].",".$json["bbox"]["lat_b"]."]";
// Check if the file we are looking for already exists
$url = "http://www.overpass-api.de/api/xapi?*[bbox=".$json["bbox"]["lng"].",".$json["bbox"]["lat"].",".$json["bbox"]["lng_b"].",".$json["bbox"]["lat_b"]."]";
// Check if the file we are looking for already exists