Redirect files to sub-folders

[steve muiter]

I'm trying to figure out, how to direct uploads to a specific sub-folder
based on the name of a pull-down choice in the form.
I have all the sub-folders created inside my "files" folder.

For instance if the choice in their pulldown was "cars"
the file they upload would go into the sub-folder /files/cars
The choices are from  "field_3"

Here is the code from my processor.php file:

// File upload handling
if($_FILES!=''){

$field_7_filename=$_FILES;
if(!move_uploaded_file($_FILES, "./files/".$field_7_filename)){
die("File " .  $_FILES . " was not uploaded.");
}
}

$fileLine = "First Name : " . $_POST . "
Last Name: " . $_POST . "
Contest Name : " . $_POST . "
State: " . $_POST . "
E-mail: " . $_POST . "
Confirm E-mail: " . $_POST . "
Upload File: ".$where_form_is."files/".$field_7_filename."

";
$filename = 'data.csv';
if (is_writable($filename)) {

    if (!$handle = fopen($filename, 'a'))
    {
         echo "Cannot open file ($filename)";
         exit;
    }
    if (fwrite($handle, $fileLine) === FALSE) {
        echo "Cannot write to file ($filename)";
        exit;
    }

    fclose($handle);

} else {
    echo "The file  is not writable";
}

include("confirm.html");

?>