kamailio/modules/xmlops/doc/functions.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">

<section id="textopsx.pvs" xmlns:xi="http://www.w3.org/2001/XInclude">
    <title>Pseudo-Variables</title>

	<section id="pv-xml">
		<title>
		<function moreinfo="none">$xml(name=>spec)</function>
		</title>
		<para>
		Pseudo-variable for XML document operations using xpath syntax. For
		more see the Pseudo-Variables Cookbook.
		</para>
		<example>
		<title><function>xml</function> usage</title>
		<programlisting format="linespecific">
...
$xml(x=&gt;doc)
    = '&lt;?xml version="1.0" encoding="UTF-8"?&gt;&lt;a&gt;&lt;b&gt;test&lt;/b&gt;&lt;/a&gt;';
xlog("content of node b: $xml(x=&gt;xpath:/a/b/text())\n");
$xml(x=&gt;xpath:/a/b) = "1234";
...
</programlisting>
		</example>
	</section>

</section>