You're perhaps looking for an opcode cache...!?
– deceze18 mins ago
No reason why not, it's just another disk as far as the system is concerned; why do you think it might be a problem? why do you believe that you'd need some kind of plug-in?
– Mark Baker17 mins ago
php couldn't care less where the bytes comprising your script come from. ram disk, magnetic disk, flash storage, infinite monkeys banging on a keyboard. it's all just files...
– Marc B17 mins ago
Take a look at things like the APC cache instead, that approach is much more powerful, newer php engine already have such a cache integrated, so that it is obsolete. Note that php is a just-in-time compiler, above caches cache the compiled source which obviously has more impact than "just" making file reads faster...
– arkascha17 mins ago
@arkascha - APC is rather dated; use the built-in OpCache with modern versions of PHP if you want an opcode cache
– Mark Baker16 mins ago