It was in 2002 when Philipp played his first match for professional Munich club. He played as a substitute and that match was a draw against RC Lensin the competition of UEFA Champions League. Then he did not played even a single match during the season of 2002-2003 but other football club signed him as loan. In season of 2003-2004 against Hansa Rostock, he made his debut in Bundesliga. This time he played as a substitute in 76th minute.

In 2003, against English club Manchester United, his first appearance in Champions league was observed as starter. In season of 2003-2004, he played 31 games for Stuttgart in Bundesliga and 7 in Champions league. His first goal was against Wolfsburg. Then it was time to come back in his old Munich club in July-2005 and played match in the month of November.

During season 2006-2007, he played 34 matches for his new club. 2008-2009 season was best for him, in which he scored 3 goals in German league and one in DFB Pokal. He was given 25,000 Euros which was biggest fine in Bayern Munich. In Jan-2011, Bayern made this player as captain. During season of UCL 2012-13, he scored first goal as captain in finals. But they lost in penalty shootout against Chelsea.

Under his captaincy in season 2012-13, he lifted Bundesliga, DFB Pokal, Champions league and Audi cup trophies with his team. On 18 July 2014, Lahm, at the age of 30, announced his retirement from international football. He had scored five goals in 113 appearances. His net worth was about $100 million. On 2 September 2014, Bastian Schweinsteiger succeeded Lahm as captain of the German national team.

During and shortly after the World Cup there were rumors of a big money move to Chelsea FC. However, the transfer never took place, due to his impressive showings and his growing reputation in World football, Bayern Munich issued a public warning to any interested suitors, stating he was non transferable.

As to the personal life in his biography, he married to his longtime girlfriend Claudia Lahm after four days of final of FIFA World cup in 2010. He is also fond of snooker, which he plays during his busy time. On 15 August, 2012 Philipp and his wife welcomed their first son Julian. He is also involved in large number of campaigns. He formed a foundation called Lahm-Stiffing which helps hard-up kids. He can be seen on the field wearing number 21 on his back for Bayern Munich. He is also an official ambassador representing “FIFA for SOS Children's Villages".