PHP MYSQL update query not updating fields

[pilot911]

I have the following PHP script to update two time/date fields in the database.

When i run this the fields are not updated.

Can anyone see where i m going wrong.

 <?php
$con = mysql_connect("localhost","dbname","dbpassword");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
  
echo 'Connected successfully';

mysql_select_db("my_db", $con);

mysql_query("UPDATE msm_content SET created = '2011-01-02 00:00:00', modified = '2011-01-01 00:00:00'");

echo 'Query Updated successfully';

mysql_close($con);
?>  

Your guidance is much appreciated.

Chris