How to find a start date & end date of any given year & month

Question

I have problem in php find start date & end date of month & year , when i know the year and month ?

ex:

input - > year = 2011 , month = 0         


        

Answer 1

echo date('m-01-Y 00:00:00',strtotime('this month')) . '
';
echo date('m-t-Y 12:59:59',strtotime('this month')) . '
';