How to use 2 php handlers on one server?

I am new to apache, PHP on linux. I have a server with PHP handler set as "CGI" I mean in phpinfo page where it says "SERVER API".

Now I have to install new script on server and the script requires PHP handler as "APACHE 2 HANDLER" i.e. DSO if i am not wrong.

There are scripts/live sites already ru开发者_开发百科nning on the server. I am worried as what if after I change my server PHP handler from CGI to APACHE 2 HANDLER, my previously installed sites will have any bad effect in the matter of permissions issue or some other errors.

I would like to know whether is this possible to use "CGI" and "APACHE 2 HANDLER" on single server ? if yes then how to ?

thanks for your time, have a great day ahead