functions-xml.inc.php

<?php
/**
 * parses an XML file using the handlers defined in the functions, whose names are contained in
 * $startelementhandler, $endelementhandler, $datahandler
 */
function parsexml($xmlfile, $xmlstartelementhandler, $xmlendelementhandler, $xmldatahandler, $xmlerrorhandler)
{
	global $xmlcurrentelement, $xmlelementattrs;
	set_magic_quotes_runtime(0); // important, otherwise element attributes lead to an error
	$xml_parser = xml_parser_create();
	// set default element handlers in case the user hasn't specified one
	if ($xmlstartelementhandler == DEFAULTXMLSTARTELEMENTHANDLER) {
		$xmlstartelementhandler = 'xmlstartelement';
	}
	if ($xmlendelementhandler == DEFAULTXMLENDELEMENTHANDLER) { $xmlendelementhandler = 'xmlendelement'; }
	if ($xmlerrorhandler == DEFAULTXMLERRORHANDLER) { $xmlerrorhandler = 'xmlerror'; }
	xml_set_element_handler($xml_parser, $xmlstartelementhandler, $xmlendelementhandler);
	xml_set_character_data_handler($xml_parser, $xmldatahandler);
	if ($fp = @fopen($xmlfile, 'r')) {
		$xmlcurrentelement = '';
		$xmlelementattrs = '';
		$error = 0;
		while (!$error && $data = fread($fp, 65536)) {
			// this is a potential bug since it may split the file at 64K. need to find better solution
			if (!xml_parse($xml_parser, $data, feof($fp))) {
				$xmlerrorhandler($xml_parser);
				$error = 1;
			}
		}
		xml_parser_free($xml_parser);
	}
	else { $error = FILEOPENERROR; }
	return $error;
}

function xmlerror($xml_parser)
{ // default error handler
	sprintf('XML error: %s at line %d', xml_error_string(xml_get_error_code($xml_parser)),
	 xml_get_current_line_number($xml_parser));
}

function xmlstartelement($parser, $element, $attrs)
{ // XML parser element handler for start element
	global $xmlcurrentelement, $xmlelementattrs;
	$xmlcurrentelement = $element;
	$xmlelementattrs = $attrs;
}

function xmlendelement($parser, $element)
{ // XML parser element handler for end element
	global $xmlcurrentelement, $xmlelementattrs;
	$xmlcurrentelement = '';
	$xmlelementattrs = '';
}
?>