May be I was not able to explain properly, lets compare with cPanel, if you use easyapache from it, it lets you choose version between what modules / php extension you want with each version of PHP but in in DA I am not able to figure out that how to have some PHP extension not included in a particular version but are there in other php version under multi-php setup.
I have been to that help page but its rather vague. For similar situation, I used to compile or get precompiled extension.so and add it to php.ini . As you can see my concept about compiling things with PHP is not clear. Hence I was looking for some more practical example rather than reference.
Also, can I do that from custombuild GUI included with DA because I suppose having a webhosting control makes life easier, but here its kind of getting complicated.
Yes I'm sorry. After you replied again I realised that you might be looking for al version selection and my answer was not adequate for that. So that's why I did not gave an additional reply.
I doubt if a version selection can be done that way. We have to wait an answer from somebody else.