CodeIgniter Upload Progress
Actually, after doing some further research, it seems that Dropzone.JS works really well with CI, with very little configuration and tweaking. I haven't had the chance to use all of its features yet, but after just about 5 minutes of work it's got upload progress AND drag 'n' drop uploading working just fine.
http://vortexdev.netii.net/article_20/Integrate_jQuery_File_Upload_with_CodeIgniter
- 2012/05/14
https://github.com/blueimp/jQuery-File-Upload/wiki/jQuery-File-Upload-6.5-with-CodeIgniter-2.1
- edited 5 months ago
It's a tough one. There are many solutions, but a lot depends on the stack and target (e.g. no flash in your case). There is a PECL extension which provide native functionality as well as many examples of others trying to do the same thing that have been active within the last year. Theres also this which claims to offer straight html progress based on PHP's output control. I couldn't get it to work locally though.
Best bet is to start mashing stuff together and try to get something that works - there isn't at the moment a straight plug-n-play solution for CI upload progress bars.