fopen wrappers can not open file on ftp site in write mode,
e.g. I can not use it to _upload_ file to server.

Sample code:

$f=fopen("ftp://dzoni:xxx@yyy.eunet.yu/tmp/test.txt","w");
if ($f){
        fputs ($f,"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
 	fclose ($f);
} else {
	echo "cann't upload file";
}

If the file /tmp/test.txt doesn't exist I get:
<b>Warning</b>:  fopen("ftp://dzoni:***@yyy.eunet.yu/tmp/test.txt","w") - Not a directory in <b>test.phtml</b> on line <b>5</b><br> 

If the file exists and I can write to file (e.g it's mode 666), I
get no warning message, but content's of file are not
changed.

I can read files on ftp fine, I would just like to be
able to upload them this way, and in docs it is't mentioned
that this can not be done.

Put it on a wish list if you don't consider it a bug.

Regards,
Nikola Kljukovnica