Hrm...
<?php
$filename = "file.txt";
$data = file_get_contents($filename);
$parser = xml_parser_create();
xml_parser_set_option ( $parser, XML_OPTION_CASE_FOLDING, 0 );
xml_parser_set_option ( $parser, XML_OPTION_SKIP_WHITE, 1 );
xml_parse_into_struct ( $parser, $data, $vals, $keys );
xml_parser_free ( $parser );
print_r ( $vals );
?>
Give that a try? Doesn't do too much...