function externalEntityReference($parser, $names, $base, $systemID, $publicID)
{
if ($systemID) {
if (!(list($parser, $fp) = createParser($systemID))) {
echo "Error opening external entity {$systemID}\n";
return false;
}
return parse($parser, $fp);
}
return false;
}
<?php
function createParser($filename)
{
$fh = fopen($filename, 'r');
$parser = xml_parser_create();
xml_set_element_handler($parser, "startElement", "endElement");
xml_set_character_data_handler($parser, "characterData");
xml_set_processing_instruction_handler($parser, "processingInstruction");
xml_set_default_handler($parser, "default");
return array($parser, $fh);
}
function parse($parser, $fh)
{
$blockSize = 4 * 1024;
// read in 4 KB chunks
while ($data = fread($fp, $blockSize)) {
if (!xml_parse($parser, $data, feof($fp))) {
// an error occurred; tell the user where
echo 'Parse error: ' . xml_error_string($parser) . " at line " . xml_get_current_line_number($parser);
return false;
}
}
return true;
}
if (list($parser, $fh) = createParser("test.xml")) {
parse($parser, $fh);
fclose($fh);
xml_parser_free($parser);
}
