Is it possible to have two php frameworks working a side of each other as separate?

I've been doing further research about choosing a right framework for our server side processes,

So I camed with the question:

• Is it possible to have two frameworks working aside of each other as seperate?
• For instance I wanna have Laravel for my server side admin, and I want PHP Phalcon for our web services (because it written with C and faster),Is it possible?
• Does it create any integration problem or sth?

Thanks in advance,

via Mohammadali Mirhamed