title: Increment date, calculate date
body: <p>I have one particular problem, I have script which should issue bill statement. Now what I  want is that the due date of the bill must be 14 days after the issued date.</p>
  
  <pre><code>$issue_date = mysql_real_escape_string(trim($_post['issued_date']));
  $due_date  = mysql_real_escape_string(trim($_POST['due_date']));
  $query = "insert into utility (issue_date, due_date)values(now(),now()+ (60 * 60 * 24 *14)";
  </code></pre>
  
  <p>But that is not really working at all. Any help please?</p>