PHP/XML/XML Validation

XML file validation

   <source lang="html4strict">

<?php

    $xml = "<para>some character data</para>";
    $parser = xml_parser_create ();
    if (xml_parse ($parser, $xml, true))
         print ("Your XML document is well-formed.");
    else
         print ("Your XML document is not well-formed.");
    xml_parser_free ($parser);

?>

      </source>