53 Pa. Stat. § 13101 : Statutes (Unconsolidated) — MUNICIPAL AND QUASI-MUNICIPAL CORPORATIONS — CITIES OF THE FIRST CLASS — HOME RULE — ADOPTION AND AMENDMENT OF CITY CHARTERS — Cities empowered to adopt and amend charters

Any city of the first class may frame and adopt a charter for its own government and may amend its charter whether the same has been originally adopted under the provisions of this act or provided by local, special or general law.