Can I use file_get_contents() to compare two files?

Question

I want to synchronize two directories. And I use

file_get_contents($source) === file_get_contents($dest)

to compare two files. Is there an

Answer 1

Seems a bit heavy. This will load both files completely as strings and then compare.

I think you might be better off opening both files manually and ticking through them, perhaps just doing a filesize check first.