Details on my setup...  

Apache 1.3.11, php 3.0.15, gd 1.7.3, zlib 1.1.3

php/configure --with-gd=/usr/local/src/gd-1.7.3/ --with-apache=../apche_1.3.11 --enable-track-vars

apache/configure --prefix=/www --activate-module=src/modules/php3/libphp3.a


I'm trying to fopen a remote png file using http with... 
$fp = fopen("http://neo.xxx.com/mrtg/fw1-day.png","r");

If I do a print(fread($fp,3024));  I get the raw dump of the complete image... so far so good.

I then pass that $fp to

$im_in = imagecreatefrompng($fp);

And it returns a null... 

If I pass it a local file name it works fine...

The file does exist in the specified location in all cases... This was working at one point.. (3.0.13 perhaps) I wrote it back then.. and have not tried to use it until now...