严重性：未定义的偏移量：0注意消息：尝试获取非对象的属性

Question

$coordinates = file_get_contents('http://maps.googleapis.com/maps/api/geocode/json?ad## Heading ##dress=' . urlencode($address) . '&sensor=true');  $coordinates = json_decode($coordinates);   $lat = $coordinates->results[0]->geometry->location->lat;   $lng = $coordinates->results[0]->geometry->location->lng;