Harry Potter and the Sorcerer's Stone Cheats (PlayStation)

At Hogwarts while wodering around, there are bookshelves you can open
and get prizes! There are two in the Great Foyer. If you can not climb
on bookshelves, press square and it will open up. There is also one
outside the Gryffindor Common Room. The nearest bookshelve to the
portrait of the Fat Lady can open up. Prizes consist of wizard cards and
Betie Bott's Every Flavor Beans(yellow in color).

There are secret passages out in the hogwarts grounds.The way into
  them looks like a discolored section of wall
  

  
Flying Lesson

  After you have completed Flying Lesson and attend a different class,
  go back to the Flying Lesson. Go in and then you will see what looks
  like glowing butterflies. Catch all of them and Madam Hooch will award
  Gyffindor 20 or 25 house points.

  
Bookcase Hint
  
All the non climbable bookcases can be opened.
  Try it and find 11 of the 17 cards!!
  

  
How to beat Lord
  Voldermort

  Once you have put fluffy to sleep,beet the devil snare, got past the
  chess game and made the troll fall down the pit, Hermione will have
  opened the door. A game is played. The knight you'll need is the with
  the sheild.Keep you eye on the bell he's under, then hit the bell with
  you spell, and use two charged Knockback  Jynx on it.p.s. He'll
  have a shield so wait till he has swing at you then use your charged
  spell on him. DO this again an hell, die and drop a potion youll have
  drink it,and run through th fire. In the next room there will be 4
  knights, repeat what you did before. A giant knight will then appear.
  Get close to him, wait for him swing,run out the way and hell become
  visible and shoot him with a charged spell and keep doing this for 5
  to 6 times and you'll defeat him. Go across the bridge and in to the
  other room.To get past part 1 of Lord V. wait till he's next to pillar

   and use a charged spell on the pillar. Ropes will stop you from
  moving, so just press square over and over again. Part 2.This is
  simple: wait till he's on the other side of the mirror and use charged
  spells on the mirror for 3 times and repeat,

  dodge his spells. Part three: Press square and x together repeatedly
  and a quick fire pad wont work, I've tried. Watch the end sequence and
  save your game.

 

To get the feather at Eylops owl emporium, pick up the the treats and
throw them at the owl in the cemter. Time your throw carefully, because
if you don't the other owls will eat the feed.



Fighting Malfoy

When you are fighting Malfoy in the entrance hall stand far away and let
him throw the crackers at you. Dodge them so that they fall on the
ground. Pick them up and throw them at Malfoy quickly.

Its not exactly a code but a hint.  When you enter the room where
Nearly Headless Nick tells you how to move an extra large flipendo block
leave it where it is and climb the stairs and run onto the block. 
From there go to the balcony across from it where, you will find a web
there.  Hit it with  a flipendo and you will get 5 house
points for gryfindor and a chocolate frog. 

If you are on the the third level of collecting the scrolls at Gringotts
and you are having problems make sure to get the first scroll first. If
you do not, none of the other scrolls will appear.