title: How to determine file age using PHP?
body: <p>Any way to determine file age of an image in a folder using PHP?</p>
  
  <p>I want to delete older files than 2 hours, is this possible without adding timestamp-names to their filenames on upload to the folder?</p>
  
  <p>If so, please give me an example!</p>
  
  <p>thanks</p>