It doesn’t matter if you live there or not - you were issued a ticket because you violated a city law while you were driving there. They ran your plate, they mailed you a ticket. Pay the fine, plea not guilty and go to court or ignore it and wait for a bigger bill when it goes to collections.

You know all the Philly mottos already- “you don’t like us, we don’t care” & “eff around & find out” are the two that are probably most applicable here.