title: Code Igniter File Upload Class - How to change saved filename?
body: <p>I'm writing an app using the CodeIgniter framework, and I'm utilizing the CI File Uploading class to upload image files to the server from a web form.</p>
  
  <p>The files upload fine, but I would like to be able to save them under a different, unique name on the server. I would like to tell the File Upload class to save the files to the server using that different, unique filename for each file, but I haven't been able to figure out how to do so.</p>
  
  <p>I've checked the CI docs for that class, and all I've found is that you can use the class to encrypt the filename, but I don't believe that will give me a unique filename, it just encrypts it. </p>
  
  <p>I already have the functionality in the app that assigns a unique filename, so I just need to figure out how to get the File Uploading class to accept that alternate filename each time I save a file. Anyone know if it's possible to do that?</p>