In PHP 4.0 RC 1 running under Windows 2000 / IIS as an ISAPI module:

using fread function to obtain contents of a binray file
returns only a part of a file. Piece of code I used:

<?php

$fd = fopen("test.jpg", "r");

$size = filesize("test.jpg");
echo "<br>Filesize is: " . $size;

$bdata = fread($fd, $size);

$fp = fopen("bla.jpg", "w");
fwrite($fp,$bdata);
fclose($fp);
fclose($fd);
?>

Length of text.jpg is 11755 bytes. After running the code
length of bla.jpg is 65 bytes.
Tries writing $bdata = fread($fd, filesize("test.jpg"));
Didn't work.
All examples i found at www.faqts.com use the same way to
obtain contents of file. One is found at:
http://www.faqts.com/knowledge-base/view.phtml/aid/161/fid/13/lang/

Thanks!