title: SQL entries that expire after 24 hours
body: <p>I want to make a table where the entries expire 24 hours after they have been inserted in PHP and MySQL.</p>
  
  <p>Ideally I want to run a "deleting process" every time a user interacts with my server, that deletes old entries. Since this is more frequent you should it will not have large amounts of data to delete so it should only take a few milliseconds.</p>
  
  <p>I have given each entry a date/time added value.</p>
  
  <p>How would I do this?</p>