title: Is it possible to make a PHP script run itself every hour or so without the use of a cronjob?
body: <p>I'm pretty sure I've seen this done in a php script once, although I cant find the script. It was some script that would automatically check for updates to that script, and then replace itself if there was an update.</p>
  
  <p>I don't actually need all that, I just want to be able to make my PHP script automatically run every 30 minutes to an hour, but I'd like to do it without cronjobs, if its possible.</p>
  
  <p>Any suggestions? Or is it even possible?</p>
  
  <p><strong>EDIT:</strong> After reading through a <em>possible duplicate</em> that RC linked to, I'd like to clarify.</p>
  
  <p>I'd like to do this completely without using resources outside of the PHP script. AKA no outside cronjobs that send a GET request. I'd also like to do it without keeping the script running constantly and sleeping for 30 minutes</p>