/**
* Check if the XML respect the DTD.
* Require the XML_DTD package
*
* @param string $xml The XML text to check
*
* @return boolean Return true if valid
* @access public
*/
function isValid(&$xml)
{
$validator = new XML_DTD_XmlValidator();
$tree = new XML_Tree();
$nodes = $tree->getTreeFromString($xml);
if (PEAR::isError($nodes)) {
return $nodes;
}
$parser =& new XML_DTD_Parser();
$validator->dtd = $parser->parse($this->_dtd);
$validator->_runTree($nodes);
if ($validator->_errors) {
$errors = $validator->getMessage();
return PEAR::raiseError($errors, XML_FASTCREATE_ERROR_DTD);
}
return true;
}
