Blah blah blah ...
This thread is in the "CodeIgniter 3.x" forum and CI3 will support PHP 5.2.4, period. There's no reason not to, simply because it already does, it's practically complete and will be released very soon.
CI4 is another story, but arguments about whether it requires 5.3, 5.4, 5.5 or 5.6 are pointless.
It surely will bump up the version requirement to at least PHP 5.3, which is the cornerstone giving us namespaces, closures, guaranteed existence of some classes, functions, low-level support for stuff like Blowfish '2y', etc.
The next big thing is traits in PHP 5.4 and that's the only thing we really need to decide on. If we decide that we can't live without traits, then 5.4 it is. Other than that however, there's no significant enough difference between versions that can't be worked around.
So far, you guys are wasting your time.
