If I pass the date it should convert week

If I pass the date It should display week in the format example from date 8/6/2012 to 9/9/2012 Week 32 August 6, 2012 August 12, 2012 Week 33 August 13, 2012 August 19, 2012 Week 34 August 20, 2012 August 26, 2012 Week 35 August 27, 2012 September 2, 2012 Week 36 September 3, 2012 September 9, 2012

pls help me out regarding this issues