If you're searching for a particular person buried in a particular cemetery, you may want to check the online OPAC of the Historical Society of Pennsylvania to see if they have records for that particular cemetery.
Many of the records are on microfilm, but some are in bound volumes you can just pull down off the shelf. It costs $6 to visit the library if you're not a member.
They have a wide variety of cemetery records, especially for ones located in Philadelphia and the near suburbs. You might be surprised what you find!