Upload status script

How can I write a upload status script for my picture upload script. here is the upload script. If the upload script can be put on a seperate page that would be better and just require() it with this upload script.

<?php
$myback = "model-picture-form.php";
$limitedext = array("image/gif","image/jpg","image/jpeg","image/pjpeg", "image/bmp");

$uploaddir = 'pictures/';

$count = isset( $_POST["count"] ) ? intval( $_POST["count"] ) : 1;

for( $i = 1; $i <= $count; $i++ )
{
    if( isset($_FILES['img'.$i]) && !empty($_FILES['img'.$i]['tmp_name']) )
    {
        $tmp_filename = $_FILES['img'.$i]['tmp_name'];

        $filename = basename($_FILES['img'.$i]['name']);

        $filetype = $_FILES['img'.$i]['type'];

        $filesize = $_FILES['img'.$i]['size'];

        $uploadfile = $uploaddir . $filename;

        $fileext = strrchr($filename, '.');

        // Return error if the file-size is greater than 30000 bytes.
        if( $filesize > 30000 )
        {
            echo "<br><br>Sorry, File size is bigger than 30 KB and has not uploaded.<p> Please go back an find a picture with a smaller file size. <a href='$myback'>Back To Form</a>";
        }
        else
        {
           if( in_array(strtolower($filetype), $limitedext) )
           {
               if ( $handle = opendir($uploaddir) )
               {
                   while ( false !== ( $file = readdir($handle) ) )
                   {
                       if ( $file != "." && $file != ".." )
                       {
                           if( strtolower($file) == strtolower($filename) )
                           {
                               $changed_file_name = basename( $filename, $fileext ) . '_' . date("YmdHis") . $fileext;
                               $uploadfile = $uploaddir . $changed_file_name;
                           }
                       }
                   }
                   closedir( $handle );
               }

               if ( move_uploaded_file($tmp_filename, $uploadfile) )
               {
                     chmod( $uploadfile, 0755 );
                     print ". <br><br>File is valid, and was successfully uploaded. <a href='$uploadfile' target=\"_blank\">Click here</a> to view the file";
               }
               else
               {
                     print "<br><br>Possible file upload attack!  Here's some debugging info:\n";
                     print_r($_FILES);
               }
           }
           else
           {
              echo ". <br><br>Invalid file and not uploaded. Please upload only JPG or GIF or BMP file.";
           }
        }
    }
}

?>