Section 5227 - Amendments(a) The county commissioners may from time to time amend the number, shape, boundary or area of any district or districts, or any regulation of or within such district or districts, or any other provision of any zoning ordinance, but no such amendment shall be made or become effective until the same shall have been proposed by or be first submitted for approval, disapproval or suggestions to the zoning commission and the Pennsylvania State Planning Board.(b) Any proposal, approval, disapproval or suggestions of the zoning commission or the State Planning Board shall have advisory effect only and not be binding upon the county commissioners, and unless such zoning commission or State Planning Board shall have transmitted its report upon the proposed amendment within thirty days after the submission thereof to it, the county commissioners shall be free to proceed to the adoption of the amendment without further awaiting the receipt of the report of the zoning commission or State Planning Board. Before finally adopting any such amendment, the county commissioners shall hold a public hearing thereon, at least thirty days' notice of the time and place of which shall be given by at least one publication in a newspaper of general circulation in the county.1953, July 28, P.L. 723, art. XXII, § 2227.