when a user uploads a file, an array is created in the $FILES superglobal. if you want to get the name of it, you will need to echo $FILES['imgfile_name']['name'];
the other vars that become available are:
$_FILES['userfile']['name']
The original name of the file on the client machine.
$_FILES['userfile']['type']
The mime type of the file, if the browser provided this information. An example would be "image/gif".
$_FILES['userfile']['size']
The size, in bytes, of the uploaded file.
$_FILES['userfile']['tmp_name']
The temporary filename of the file in which the uploaded file was stored on the server.
$_FILES['userfile']['error']
The error code associated with this file upload. ['error'] was added in PHP 4.2.0
see http://php.net/features.file-upload for more details.
