title: How to save time as UTC time in php/mysql?
body: <p>I use</p>
  
  <pre><code>date_default_timezone_set($_SESSION['time_zone']); 
  </code></pre>
  
  <p>to set a users timezone on a page, I am wanting to know, how do I save current time to mysql in php with the current UTC date and time?  Also should I be storing it as a timestamp?</p>
  
  <p>My existing site used datetime fields and when I saved a new item to mysql I could just use <strong>now()</strong> in the php part making the insert or update query</p>