I'm developing a webapp in PHP, and the core library is 94kb in size at this point. While I **think** I'm safe for now, how big is too big? Is there a point where the script's size becomes an issue, and if so can this be ameliorated by splitting the script into multiple libraries? 

I'm using PHP 5.3 and Ubuntu 10.04 32bit in my server environment, if that makes any difference.

I've googled the issue, and everything I can find pertains to PHP upload size only.

Thanks!

---

Edit: To clarify, the 94kb file is a single file that contains all my data access and business logic, and a small amount of UI code that I have yet to extract to its own file.