Added DateUploaded time to MS SQL database from PHP

After looking into it for a while I am struggling to use a hidden form field and a PHP MS SQL Query to add the date uploaded to the database when the data is submitted. Something similar to the MySQL NOW() function. Which I have tried and doesn't work. I also then tried the PHP date function.

<input type="hidden" name="DateUploaded" value="<?php date("d","m","y") ?>">

With my upload looking like this:

<?php
 $Title=$_POST['Title'];
 $Synopsis=$_POST['Synopsis'];
  $Article=$_POST['Article'];
  $DateUploaded=$_POST['DateUploaded'];
  $Deleted=$_POST['Deleted'];
  mssql_connect("*************", "*********", "*********") or die;
  mssql_select_db("DBName") or die;
  mssql_query("INSERT INTO DBTable (Title, Synopsis, Article, DateUploaded,   Deleted) VALUES ('$Title','$Synopsis','$Article','$DateUploaded','$Deleted')");
  Print "Your information has been successfully added to the database.";
   ?>

Its just a simple test blog DB, however when I try this technique I get this error:

Warning: mssql_query() [function.mssql-query]: message: Conversion failed when converting character string to smalldatetime data type. (severity 16) in (File Path) on line 9

I understand this is because im trying to put a string into a DB column set as smalldatetime. I was just wondering if there is a way around this that doesn't involve me having to change the data type in the DB?

Any help would be appreciated.

---

Instead of using hidden field simply use date() of php like:

$DateUploaded=date("Y-m-d H:i:s");

Make sure your database filed has a date type.