--TEST-- libxml_set_external_entity_loader() variation: resolve externals and entities --EXTENSIONS-- dom --FILE-- bar&fooz; XML; $dtd = << %fooentity; DTD; $entity = << ENT; libxml_set_external_entity_loader( function ($public, $system, $context) use($dtd,$entity){ static $first = true; var_dump($public); var_dump($system); var_dump($context); $f = fopen("php://temp", "r+"); fwrite($f, $first ? $dtd : $entity); $first = false; rewind($f); return $f; } ); $dd = new DOMDocument; $dd->substituteEntities = true; $dd->resolveExternals = true; $r = $dd->loadXML($xml); var_dump($dd->validate()); echo "Done.\n"; ?> --EXPECTF-- string(10) "-//FOO/BAR" string(25) "http://example.com/foobar" array(4) { ["directory"]=> string(%d) "%s" ["intSubName"]=> string(3) "foo" ["extSubURI"]=> string(25) "http://example.com/foobar" ["extSubSystem"]=> string(10) "-//FOO/BAR" } string(13) "-//FOO/ENTITY" string(32) "http://example.com/fooentity.ent" array(4) { ["directory"]=> string(%d) "%s" ["intSubName"]=> string(3) "foo" ["extSubURI"]=> string(25) "http://example.com/foobar" ["extSubSystem"]=> string(10) "-//FOO/BAR" } bool(true) Done.