How to deal with large uploads (no error message received)?

@InsiteFX: Thanks for the answer. Yes, I know that I can change the limits. But actually I would like to get from CodeIgniter any kind of feedback that there is a problem.

I was not surprised that I did not get the large file in any of the post or files arrays but I did not expect that the strings sent together with the large file were not visible. And this resulted actually in an unexpected crash of my app because the post parameters of the strings were not found. Frankly speaking, I do not know if this is a PHP issue or a CodeIgniter issue.