Using PHP with Google Base and general feed questions

So I've been开发者_开发问答 looking into using google base for a clients job listing project. Are there any good tutorials on using PHP and curl to interact with the google base API? I was having trouble finding one on google. I attempted to cURL to the following URL: http://www.google.com/base/feeds/snippets?bq=digital+camera and working with the XML, but it didn't seem to be properly formatted XML.

I'm pretty new to dealing with feeds although I've used simpleXML and DOMDocument quite a bit so I figure this won't be too hard.

Any ideas?

Thanks in advance.

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