This function returns the next sibling of the current node. If there is
no next sibling it returns FALSE (< 4.3) or null (>= 4.3). You can
use this function to iterate over all children of a node as shown in the
example.
Example #1 Iterate over children
<?php include("example.inc");
if (!$dom = domxml_open_mem($xmlstr)) { echo "Error while parsing the document\n"; exit; }