Require constant-defining files at once or by utilisation in PHP?

Question

I have about 20 files containing 10-15 times this:

define('someConstantName','stringBetween10and200Chars');

those are all critical for the app, but each constants-file is parallel to an app page.

For example, index.php will require index_constants.php so on so forth.

The question is, should I make one file of all constant-definitions together, or require different files relatively to the pages they belong to.

I'm asking in terms of speed and efficiency.

Thanks.

Answer 1

If you are looking for the performance (since a file with useless data will be included whereas the page needs only one) then put a single file for each page but if you looking for ease/simplicity then you can put them in a single file (if you think it will not create any sort of complexity for you). Thanks...