title: convert any date string to timestamp without timezone
body: <p>I'm getting xml and rss feeds and putting the data into a database. I've run into two different date formats so far...</p>
  
  <pre><code>Wed, 21 Jul 2010 00:28:50 GMT
  </code></pre>
  
  <p>And</p>
  
  <pre><code>2010-07-20T17:33:19Z
  </code></pre>
  
  <p>I'm sure there will be more. My postgresql database for the date is timestamp without time zone. Is there an existing function in php or is there a procedure to convert the any date strings to timestamp without time zone (Y-m-d H:i:s)?</p>