Multiple Ajax Image Upload tanpa Refresh Page dengan Jquery.

<script type="text/javascript" src="http://ajax.googleapis.com/
ajax/libs/jquery/1.8.1/jquery.min.js"></script>
<script type="text/javascript" src="jquery.wallform.js"></script>
<script type="text/javascript">
$(document).ready(function() 
{ 
$('#photoimg').live('change', function() 
 {
var A=$("#imageloadstatus");
var B=$("#imageloadbutton");

$("#imageform").ajaxForm({target: '#preview', 
beforeSubmit:function(){
A.show();
B.hide();
}, 
success:function(){
A.hide();
B.show();
}, 
error:function(){
A.hide();
B.show();
} }).submit();
});

}); 
</script>


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Index.php

<?php
include('db.php');
session_start();
$session_id='1'; // User login session value
?>
<div id='preview'>
</div>
<form id="imageform" method="post" enctype="multipart/form-data" action='ajaximage.php'>
Upload image: 
<div id='imageloadstatus' style='display:none'><img src="loader.gif" alt="Uploading...."/></div>
<div id='imageloadbutton'>
<input type="file" name="photoimg" id="photoimg" />

</div>
</form>


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Ajaximage.php

<?php
include('db.php');
session_start();
$session_id='1'; // User session id
$path = "uploads/";

function getExtension($str)
{
$i = strrpos($str,".");
if (!$i)
{
return "";
}
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}

$valid_formats = array("jpg", "png", "gif", "bmp","jpeg","PNG","JPG","JPEG","GIF","BMP");
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST")
{
$name = $_FILES['photoimg']['name'];
$size = $_FILES['photoimg']['size'];
if(strlen($name))
{
$ext = getExtension($name);
if(in_array($ext,$valid_formats))
{
if($size<(1024*1024)) // Image size max 1 MB
{
$actual_image_name = time().$session_id.".".$ext;
$tmp = $_FILES['photoimg']['tmp_name'];
if(move_uploaded_file($tmp, $path.$actual_image_name))
{
mysql_query("UPDATE users SET profile_image='$actual_image_name' WHERE uid='$session_id'");
echo "<img src='uploads/".$actual_image_name."' class='preview'>";
}
else
echo "failed";
}
else
echo "Image file size max 1 MB"; 
}
else
echo "Invalid file format.."; 
}
else
echo "Please select image..!";
exit;
}
?>

=================================================================================
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