Multiple files can be selected and then uploaded using the
<input type='file' name='file' multiple>
The sample php script that does the uploading:
foreach ($_FILES['file']['name'] as $filename)
$count=$count + 1;
The selected files are received as an array with
$_FILES['file']['name'] storing the name of first file.
$_FILES['file']['name'] storing the name of second file.
and so on.
Hope it helps!!