Apache and mod_php - is the bytecode cached?

Question

PHP

As far as I understand in cgi mode - the php script is translated (interpreted) every time the script is called (as if it were called from the command line). And in mod_php mode - how?
If apache "remembers" the result of the translation of the called php file (caches), then what happens when the php file is changed on disk?

Answer 1

It doesn't cache anything.

Answer 2

I'll add @AloneCoder . There are eaccelerator, xcache, apc, opcache for this.

Answer 3

If PHP is in mod_php mode, then the file is cached. Once a file is modified, nothing will happen until the cached file expires. Let's just say that the TTL for the cache costs 5 minutes, if you executed the file, it was cached, then you made changes, then these changes will take effect only after 5 minutes (from the moment the file is executed). You can force clean storage.