(a) General rule.--An ordinance shall be enacted for the opening, widening, straightening, extending or vacating of any street without petition of property owners by the affirmative vote of a majority of the whole number of members of council, plus one.
(b) Enactment of ordinance.--The following shall apply prior to the enactment of an ordinance pursuant to subsection (a):
(1) The expiration of 28 days from the date of its introduction.
(2) Prior to the end of the 28-day period in paragraph (1), copies of the ordinance shall be published in a newspaper of general circulation in the city once a week for three consecutive weeks immediately following the introduction of the ordinance.
(3) In case no newspaper is published in the city, the publication shall be in the same manner in one newspaper published in the county as required by section 10109 (relating to publication of notices).