PHP desk job Salary

I need guideline, what is PHP salary range or what should i demand?
I learned PHP 7 and Laravel and got certification from my institute.

You should check job portals. Find jobs related to your skills, go through into their details like how much education & experience and what skills are required and what salary package is offered. Maybe this will help you out.

which sites?

You can search on google.

Anyone there to guide me please in this regard?