使用PHP进行Google Contacts API XML解析

Question

I have an xml feed from Google Contacts API, but I have trouble reading <gd: tags.

$xml = simplexml_load_string($google_contacts);

This reads every elements except the <gd: tags, which contains e-mail information.

What's the best thing to do?

Answer 1

Update: If you're using name-spaces and xpath, you might need to register them first in SimpleXML.

If you have problems to access an element, try to enclose it within {} angel brackets, this probably helps: $xml->{gd:...}.

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SimpleXML has no/limited support for XML-Namespaces if I remember correctly. DomDocument has, so take it instead.

For a first start:

$dom = new DomDocument;
$dom->loadXML($google_contacts);
...

Or use DomDocument for the part that is difficult to do in SimpleXML only:

$domElement = dom_import_simplexml($simpleXmlNode);