--TEST-- Bug #47997 (stream_copy_to_stream returns 1 on empty streams) --INI-- allow_url_fopen=1 --FILE-- <?php $in = fopen('data://text/plain,', 'rb+'); $out = fopen('php://memory', 'wb+'); var_dump(stream_copy_to_stream($in, $out)); ?> --EXPECT-- int(0)