--TEST-- highlight_string(), output buffer and error level --INI-- error_reporting=8192 --FILE-- <?php echo "hello\n"; $string = str_repeat("A", 1024); var_dump(error_reporting()); highlight_string($string, true); var_dump(ob_get_contents()); var_dump(error_reporting()); echo "Done\n"; ?> --EXPECTF-- hello int(8192) bool(false) int(8192) Done