Mark Fiorino, a fellow gun owner in the state of Pennsylvania, was walking to a local auto parts store when he was confronted by officers of the Philadelphia Police Department because he was openly carrying his firearm. In our commonwealth, open carry is completely legal without a license except for when carrying in a car, in the city of Philadelphia and during the time of a declared emergency. The statue below, which can be found in the PA Uniform Firearms Act, is the current law with regards to carrying in Philadelphia.
§6108. Carrying Firearms on Public Streets or Public Property in Philadelphia.