Parsing XML with inline values

I know how to parse an XML file but this is the first time I encountered something with inline values

<?xml version="1.0" encoding="iso-8859-1"?>
<imginfo xmlns="http://ift.tt/WTNiWK" version="8" timestamp="1406951709">
    <files server="540" rownumber="8376">
        <image size="177" content-type="image/jpeg">sample_name_here.jpg</image>
    </files>
    <resolution>
        <width>800</width>
        <height>486</height>
    </resolution>
</imginfo>

How can I extract the value of the [server] in this case the value is 540