use stream_copy_to_stream (prasathmani#1014)

* use stream_copy_to_stream

it's simpler, and should be faster.
For example, stream_copy_to_stream can use sendfile ( https://man7.org/linux/man-pages/man2/sendfile.2.html ) on operating systems supporting it, which is faster and use less RAM than fread()+fwrite() (because it avoids copying data to/from userland, doing the copy entirely in-kernel~)

* fix loop early return, and workaround bug

* use feof

ref prasathmani#1016 (comment)

tinyfilemanager.php

@@ -1090,7 +1090,12 @@ function get_file_path () {
                 if ($out) {
                     $in = @fopen($tmp_name, "rb");
                     if ($in) {
-                        while ($buff = fread($in, 4096)) { fwrite($out, $buff); }
+                        if (PHP_VERSION_ID < 80009) {
+                            // workaround https://bugs.php.net/bug.php?id=81145
+                            while (!feof($in)) { fwrite($out, fread($in, 4096)); }
+                        } else {
+                            stream_copy_to_stream($in, $out);
+                        }
                         $response = array (
                             'status'    => 'success',
                             'info' => "file upload successful"