Philadelphia has shut down more than a dozen fortune-tellers. The relevant law appears to be 71 Pa. C.S. § 7104:
A person is guilty of a misdemeanor of the third degree if he pretends for gain or lucre, to tell fortunes or predict future events, by cards, tokens, the inspection of the head or hands of any person, or by the age of anyone, or by consulting the movements of the heavenly bodies, or in any other manner, or for gain or lucre, pretends to effect any purpose by spells, charms, necromancy, or incantation, or advises the taking or administering of what are commonly called love powders or potions, or prepares the same to be taken or administered, or publishes by card, circular, sign, newspaper or other means that he can predict future events, or for gain or lucre, pretends to enable anyone to get or to recover stolen property, or to tell where lost property is, or to stop bad luck, or to give good luck, or to put bad luck on a person or animal, or to stop or injure the business or health of a person or shorten his life, or to give success in business, enterprise, speculation, and games of chance, or to win the affection of a person, or to make one person marry another, or to induce a person to make or alter a will, or to tell where money or other property is hidden, or to tell where to dig for treasure, or to make a person to dispose of property in favor of another.
That’s kind of a dense bit of text, but I think the highlighted bit makes clear that it’s an unconstitutional restriction on free speech. As writen, the law prohibits me from writing a letter to the editor claiming that I can predict that the sun will come up tomorrow.