How to make RouterOS client variable by PHP scripting

RouterOS Scripting
1

$util = new RouterOS\Util($client = new RouterOS\Client(‘192.168.1.1’, ‘admin’, ‘admin’));


How can i put PHP variable in in place of ‘192.168.1.1’ ,so that I can choose the client IP from “OUTER selection screen” if there are multiple clients.


I looking for the solve of this problem..Can any one post the solve…


Thanks in advance.
Saugata Ray