Re: xpath_register_ns problem

Dan Allen (dan@mojavelinux.com) wrote: > I was testing out this function today (xpath_register_ns) and I > found a possible problem in its implementation. If you use several > namespaces in you document and then define a last one to be the > default namespace, how are you supposed to register this with the > php function. Example: > > <?xml version="1.0" encoding="utf-8"?> > <rdf:RDF > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"…×Êé > mlTËaü;8 > xmlns:dc="http://purl.org/dc/elements/1.1/" > > xmlns:pl="http://mojavelinux.com/rss/1.0/modules/places" > xmlns="http://purl.org/rss/1.0/" > > > <channel > rdf:about="http://mojave.mojavelinux.com/newsletter/"> > <title>Local Sights and Attractions in Washington/Balimore for the Dan &amp; > Sarah Wedding</title> > > <link>http://mojave.mojavelinux.com/newsletter/</link> > <description>Places in the Washington/Baltimore area where our guest may entertain > themselves.</description> > (clip...) > > Now if you run the query > > $ctx->xpath_register_ns('rdf', > 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'); > $ctx->xpath_register_ns('dc', > 'http://purl.org/dc/elements/1.1/'); > $ctx->xpath_register_ns('pl', > 'http://mojavelinux.com/rss/1.0/modules/places'); > $ctx->xpath_register_ns('', > 'http://purl.org/rss/1.0/'); > $ctx->xpath_eval('//channel'); > > You get no results. However, if you replace the last namespace > declaration with the name of 'rss' and change call the tags to > <rss:*> and then do the query > > $ctx->xpath_eval('//rss:channel'); > > You get the expected results. So basically, it seems that the > xpath_register_ns function does not allow you to register a default > namespace. > As a follow up to this, how are you supposed to tell what namespaces the xml document has...should this be done automatically? Dan -- ________________________________________________________________ Daniel Allen, <dan@mojavelinux.com> http://www.mojavelinux.com/ ________________________________________________________________ There is no such thing as a casual knowledge of xslt, either you know everything about it or you are sitting in the creek. ________________________________________________________________