I can't see your key potential from the description you have given.
From what I read it's not much experience and not very specialized. After I had been into PHP for 1 year I barely knew anything about the language compared to now. After 10 years with PHP and 1 year Laravel I was still a rookie in Laravel. You might differ.
I think you should try to get some references instead of focusing on your salary right now. You can either do your own projects but the best would be to work for someone else who can challenge your skills and improve them. Even if you have to work for free this will be great value to you in the long run.
The actual salary depends on where in the world you get hired. In Denmark the minimum would be around $20 per hour the usual start salary would be $30 per hour and $60 per hour for a very qualified programmer - that requires a good sense of business understanding too. The more specialized the higher of course as Todd says.
All these numbers for sure don't apply to every country especially since we have 50% tax and therefore generally higher income.