title: mysql time difference
body: <p>I am trying to do a little spam filter with mysql. I want to check the last record a user has created in a table and compare it to the current time. The time created is stored as <code>date_created</code> with mysql <code>datetime</code> format.</p>
  
  <p>I have tryed <code>TIMEDIFF()</code>, but I can't get it to work for me, please help. </p>