--TEST-- Check mailparse_determine_best_xfer_encoding --SKIPIF-- --FILE-- getFileName(), '.txt') !== false) { $names[] = $file->getRealPath(); } } sort($names); foreach ($names as $name) { var_dump(mailparse_determine_best_xfer_encoding(fopen($name, 'r'))); } ?> --EXPECT-- string(4) "7bit" string(4) "7bit" string(6) "BASE64" string(4) "7bit" string(4) "7bit" string(4) "7bit" string(4) "7bit"