[VuFind-Tech] Processing MARCXML in record driver

[Joe A. <jo...@bo...>]

Attempting to implement a Gale back-end, simplexml_load_string is failing
to properly parse their MARCXML.

I can see the request go out and return like:

2013-10-24T16:24:04-04:00 DEBUG (7): Connect:
> http://sru.galegroup.com/GVRL?version=1.1&query=%28cql.anywhere%3D%22tanks%22%29&startRecord=1&maximumRecords=2&operation=searchRetrieve&recordSchema=marcxml&x-username=metatest
> 2013-10-24T16:24:05-04:00 DEBUG (7): Response: [200] OK


And the results look like:
https://gist.github.com/atz/a139474f9f285f0c0b5d

(Example doesn't match the logged request, but is still a good example.)

I have taken the liberty of indenting some of the structure around the
first record in the gist for visualization purposes.  If I try to process
this with a simple PHP script like:

<?php
> $xml = simplexml_load_file('gale.mrc.xml');
> echo $xml->getName() . " has " . $xml->count() . " children\n";
> ?>


I get:

> searchRetrieveResponse has 0 children


But searchRetrieveResponse clearly has many children.  What gives?  Is
"simple" incapable of processing namespace?  Do I have to use XSLT (first)?

--Joe