How to get compatible with php4 in a framework developed with php5?
Thanks
If it's not too late you could use a framework like CakePHP or CodeIgniter that support both. Otherwise, it sounds like a losing battle that is not worth the effort.
If you are developing something from scratch, I agree with the other answers PHP5 is the only way to go.
That sounds like an unnecessary waste of time.
I'd suggest using PHP5 instead.
As you are asking about a framework i assume that it is object oriented, and as such is not what i consider a candidate for backporting to PHP4.
To make me even consider the process of doing so you would have to convince me that there is in fact a solid reason for doing so. I cannot see there is one at this point.
Backporting for the sake of running a single instance of the framework is nothing but stupid. If this is due to some webhosting company that does not yet offer PHP5, just switch to another better hosting provider.