How to append XML file to another XML file

I'm trying to create an xml-based template system. The idea is to return my views as xml files (xhtml) and then appe开发者_JAVA百科nd them to specific nodes in a template xml file. The template xml is then transformed with xslt.

My question is: how do I insert these xml files into the template xml file?

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See DOMDocument::importNode and DOMNode::appendChild.