RAW FTP

[bugsuperstar37]

Please help me to understand how to use the RAW-FTP commands. This is what I have written:
$ftp=fsockopen("$url",21);
echo fgets($ftp,255);
fputs($ftp,"User $uname\r\n");
echo fgets($ftp,255);
fputs($ftp,"Pass $pword\r\n");
echo fgets($ftp,255);
fputs($ftp,"PORT 155,99,173,40,7,199\r\n");
echo fgets($ftp,255);

It works great up until the PORT command that gives the message:
Invalid PORT command.

What is wrong? I need this so I know what PORT to upload data to.

Thanks

[Anon]

Well, I tried your script, but with the port command for my own IP and using your same port and it was successful...Maybe check with netstat that you'r not using that port already for something else.

Diego