There's a number of ways to deal with it now. Having different versions of php installed is the easy part, having the webserver send requests to these is a litt

There's a number of ways to deal with it now. Having different versions of php installed is the easy part, having the webserver send requests to these is a little more tricky. Using PHP-FPM makes this considerably easier as you can have different versions listening on different unix sockets, for example.