Is it possible to have too many functions in a PHP application?

Question

Can a PHP application have too many functions? Does the execution of a large number of PHP functions hog memory and resources? My WordPress theme in-development has a lot of functions (probably more than 100 by the time I'm done) and I'm concerned that I might have too many.

Answer 1

Even if many functions led to more memory consumption, I'd advise you to use them anyway. A clear structure is much more important than performance.

Performance can be improved by throwing hardware at it, a badly structure application gets quickly very hard to maintain.

By the way: 100 functions are nothing!

Answer 2

100 functions is nothing to worry about. If your code is slow you should profile it to explicitly find the slow parts.

Remember, premature optimizations are evil