I am trying to write a form for a user to upload a file to a directory on my web server. I am connecting correctly and I can run other FTP commands, such as rename, but I am unable to upload. What can be the problem? My code is at http://www.spanimmersion.org/upload.txt

If I look at the code, I have the idea something is missing, ie. the $submit-variable, I dont see where it is created but it is used in the beginning to determine the flow.

Same for $source_file, I do see you have named the form-element 'source-file', but that doesnt mean the file 'gets' into that variabele on his own...
$sourcefile = $_FILES['source_file']['tmp_name']
because file-uploads end up in the array $_FILES

Perhaps you should read [url]http://www.php.net/manual/en/features.file-upload.php[/url] first because I also miss the encoding type for the form because you are uploading a file:
(form method="POST" action="<?php echo $PHP_SELF?>" enctype="multipart/form-data")

good luck!

You miss the multipart/form-data.

<form method="POST" action="<?php echo $PHP_SELF?>" enctype="multipart/form-data">