API - need connect VPS to site / php | perl

Hello sir, How exactly you need to connect the server & website, Using some kind of Rest API ? If you sir don't know about what talking, Thats ok i will choose the best way. Thanks!

There's some unclear aspects like your server-side perl script & available communications way of your website that can affect on final overall cost & time, so it's a good idea to have a conversation about detail. Good luck