help.xml & xml.php

gistfile1.php

help.xml
========
<?xml version="1.0" encoding="utf-8" ?>
	<help_context>

		<screen>
			<object>example a</object>
			
			<name>testname a</name>
			<id>_testid_a</id>
			<bool>true</bool>
			<text>This is a help-text</text>
		</screen>
		
		<screen>
			<object>example b</object>
			<extends>example a</extends>
			
			<name>testname b</name>
			<id>_testid_b</id>
		</screen>
			
	</help_context>
	
xml.php
=======
<?php

	$xml = 'help.xml';

	$x = simplexml_load_file( $xml );
	$output = array();
	
	foreach($x->screen as $screen_data){
		$screen  = (string) $screen_data->object;
		$extends = (string) $screen_data->extends;
		
		$output[$screen] = (array) $screen_data;
		

		if( array_key_exists('extends', $screen_data )
		&& 	array_key_exists($extends, $output) 
		){
			$output[$screen] = array_merge($output[$extends], $output[$screen]);
		}
	}
	var_dump($output);
	echo 'Fertig.';