Career
In 2007 when Brazil was in Sweden for a game against Chile and Ghana, Peter was one of four Swedish league players that were allowed to do one training pass with the Brazilian squad, the other players where Samuel Holmén, Johan Karlsson and Ari Da Silva. On 25 July 2008 Larsson and Halmstad agreed a deal with Copenhagen, where he signed a 5-year long contract. He earned his first caps for the Sweden national football team in January 2008 when he played against Costa Rica and the United States.
As of the game against Costa Rica he became the 1000th player that have represented Sweden at top level