require_once a big file or two files?

[iamaphpfreak]

If a program must call on a single file many times using require_once, and the file has (>4000lines of code), should it be split up into multiple files(2000 and 2000), assuming that the functions in the file can be broken up?

[bradgrafelman]

I would say if you can split it up, then do so. What are the thousands of lines of code doing? Just declaring classes/functions/etc. ?

Either way, you could always run speed tests... do some benchmarking with your present setup, then split the file up into chunks and run the same tests again. Don't forget that a seemingly minor improvement can become considerably large when your server is under heavy load.

[Weedpacket]

After all, why load functions/classes that are never used? If you need functions in both files, include both files; if you only need the functions in one of the files, just load that file.