Script to create multiple input type file in JavaScript

<?php
$getuploadfiles="";
$validExtensions = array(".gif", ".jpeg", ".jpg", ".png",".GIF",".JPEG",".JPG",".PNG", ".SWF", ".swf");
for($i=0;$i<=count($_FILES["file"]["name"])-1;$i++)
{
$filename=$_FILES["file"]["tmp_name"][$i];
$fileExtension = strrchr($_FILES['file']['name'][$i], ".");
if (in_array($fileExtension, $validExtensions))
{
$newName = time() . '_' . $_FILES['file']['name'][$i];
$destination = 'RealImage/' . $newName;
if (move_uploaded_file($_FILES['file']['tmp_name'][$i], $destination))
{
$getuploadfiles=$getuploadfiles.$newName.',';
}
}
}
?>
<script type="text/javascript" src="jquery2.js"></script>
<script>
$(function(){
var i=1;
$('#addupload').click(function(){
if(i<=9)
{
var addControl = '<br><br><label>Upload an image:</label>';
addControl += ' <input type="file" name="file[]" class="imageupload"><br>';
$('#TillHere').before(addControl);
i=i+1; $('#TillHere').focus();
}
});
});
</script>
<label>Upload an image:</label> <input type="file" name="file[]" class="imageupload" onchange="readURL(this);"><span id="addupload">Add more images</span>
<div class="Bottom-line" id="TillHere"></div>