[ Posted by Nikita Rushmanov ] SimpleXML foreach unset

fiddle_018135.php

<?php
$xml = "
<results>
    <result>
        <guid>a</guid>
        <version>3</version>
    </result>
    <result>
        <guid>b</guid>
        <version>2</version>
    </result>
	<result>
        <guid>a</guid>
        <version>2</version>
    </result>
	<result>
        <guid>c</guid>
        <version>1</version>
    </result>
	<result>
        <guid>a</guid>
        <version>1</version>
    </result>
	<result>
        <guid>b</guid>
        <version>1</version>
    </result>
</results>
";

$items = new SimpleXMLElement($xml);

$items_iterator = $items;

foreach($items_iterator->xpath("result") as $i_indx=>$i_item)
{
	foreach($items->xpath("result") as $k_item) 
	{
		if((string)$k_item->guid == (string)$i_item->guid && 
		   ((string)$i_item->version > (string)$k_item->version))
		{
			//reffer to: http://stackoverflow.com/a/16062633
			unset($k_item[0]);
			
		}
		
	}
}

echo $items->asXML;
?>