How to accept file through http from curl c program??

Hi there,

Hopefully someone can shed some light for us on this.

We have a client who is sending us a file through a C program which uses Curl. At our end we have a php script to accept the file passed through the form. This php script works fine using a browser however, it does not pick up what the C program sends to us.

Our php is below, $_FILES contains zilch!! Any ideas?:

foreach( $_FILES as $varname => $fileinfo ){
$filename = $fileinfo["name"];
$tmpname = $fileinfo["tmp_name"];
}

$uploaddir = '/usr/local/nameofdir/;
$uploadfile = $uploaddir. $_FILES['filename']['name'];

if (move_uploaded_file($_FILES['filename']['tmp_name'], $uploadfile)) {

$fp=fopen(brianLog1, "w+");
$string = "HTTPS POST of Purchase Order SUCCESSFUL.************ File Name: ".$_FILE['filename']['name']."\n";
fwrite($fp, $string);
}
else {
$fp=fopen(brianLog2, "w+");
$string = "HTTPS POST Failed !************* File Name: ".$_FILES['filename']['name']."\nTmp Name: " ..$_FILES['filename']['tmp_name'];
fwrite($fp, $string);

}
?>