c++ clinet and php server

[janostn]

hello
I would like to send a file with c++ client to Php server.
My php server is:

<?php
$uploaddir = '/TargetDir/ClientUploads/';
$uploadfile = $uploaddir . basename($_FILES['file']['name']);

echo '<pre>';
if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile)) {
echo "File is valid, and was successfully uploaded.\n";
} else {
echo "Possible file upload attack!\n";
}
?>

I Don't Know What to Do Next.
I uploaded the server to http://likeer.li.funpic.de/uploader.php
I want help, and sorry my poor English :)