Flat File DataBase (FFDB) for PHP

My provider made an Update of PHP 4.3.9 on 4.3.10 and
since then FFDB runs no longer:

Warning: fread(): Length parameter must be greater
than 0. in /.../ffdb.inc.php on line 2823

Warning: fread(): Length parameter must be greater
than 0. in /.../ffdb.inc.php on line 2823

Fatal error: Invalid string value for field during edit: LAND
in /.../ffdb.inc.php on line 1060

I have follows changed FFDB how:

line 1055 to 1062, delete block: if (!is_string($record
[$key])) ...

after line 2822 $strlen = $this->bin2dec(fread($fp, 4),
4);
insert: if ($strlen == 0) return "";