Jon Baer wrote: > What you're really looking for the is the 'magic' of the bin file. > > http://en.wikipedia.org/wiki/Magic_number_%28programming%29 > > There is a PECL extension for diving into libmagic ... > > http://pecl.php.net/package/Fileinfo > > - Jon > Thank you very much! I give that a try. Amazing what you know... David