How do I receive an xml response using php curl?

How do I receive an xml response using php curl? I don't need to manipulate the xml or store it or anything like that. I just need to receive it as plain xml. Does anyone k开发者_如何学编程now how to do this?

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$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/path/to/service'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$store = curl_exec($ch);

$store contains response.