PA is a very firearm friendly state. Open Carry is legal everywhere - but you need a License to Carry Firearms to Open Carry in Philly.
Compliments of packing.org
tle 18 Section 913 Possession of firearm or other dangerous weapon in court facility.
(a) Offense defined.--A person commits an offense if he:Title 18 § 912 Possession of weapon on school property.
1. knowingly possesses a firearm or other dangerous weapon in a court facility or knowingly causes a firearm or other dangerous weapon to be present in a court facility; or
2. knowingly possesses a firearm or other dangerous weapon in a court facility with the intent that the firearm or other dangerous weapon be used in the commission of a crime or knowingly causes a firearm or other dangerous weapon to be present in a court facility with the intent that the firearm or other dangerous weapon be used in the commission of a crime.
(a) Definition.--Notwithstanding the definition of "weapon" in section 907 (relating to possessing instruments of crime), "weapon" for purposes of this section shall include but not be limited to any knife, cutting instrument, cutting tool, nun-chuck stick, firearm, shotgun, rifle and any other tool, instrument or implement capable of inflicting serious bodily injury.A poster on 5/17/03 posted a reply from the PA Attorney General. The AG would not answer his request for an answer to his questions on places off limits and CCW holders but did say that there were no rulings about PA Code 18-912 concerning Permit Holders and School Property. Use Caution.
(b) Offense defined.--A person commits a misdemeanor of the first degree if he possesses a weapon in the buildings of, on the grounds of, or in any conveyance providing transportation to or from any elementary or secondary publicly-funded educational institution, any elementary or secondary private school licensed by the Department of Education or any elementary or secondary parochial school.
(c) Defense.--It shall be a defense that the weapon is possessed and used in conjunction with a lawful supervised school activity or course or is possessed for other lawful purpose.