BTW: I never did say you have to be clairvoyant, I find it disturbing to imply that I did it or "might" want to do it.
Take it easy, neither
Corion nor anyone else claimed that you said that.
With the quantity of information you provided, it's very difficult to figure out what your problem is, and you haven't provided a mean to reproduce it. So, in that sense, our only options are at best guess work, shots in the dark or being clairvoyant. That's it, nothing more, no pejorative or derogatory intent implied.
BTW, I can tell you that there is no such output limitation in Perl, I am frequently writing files with dozens of GB. As for xampp, I have no idea, I don't even know what it is.