i need some help

ok i am trying to think of this movie i saw like 7 or 8 years ago. it was kinda like this but it wasn't muppets. it is a pirate-y type of movie. so neways it begins with a boy coming home and his mom leaves and the maid or nanny is in charge, and she shows the boy this book and he starts reading it and he fell asleep or something and he was on this island. and on the island there were four pirates or so, and they were in search of treasure, and they run across the boy and give him help. i remember two parts specifically, one was where the boy climbs up a tree full of pizza and he grabs a piece and then this monster thing comes and he can't get out of the tree till the pirate ppl came to save him. the second was in like the beginning and the pirates go in the cave to get treasure and it is booby trapped, and things like that, then they found the boy. there were other pirates too. anyways at the end of the movie he wakes up or something and it was all a dream. but after my long explanation i was wondering wat the title of the movie was. if you kno that is.