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

PHP may have a more elegant way of doing this, but if you want a generic algorithm, here's what you need to do...

All months other than February have a fixed number of days. February has 29 only when it's a leap year. Here are the rules to check if it's a leap year:

1. If the year is evenly divisible by 4, go to step 2. Otherwise, go to step 5.
2. If the year is evenly divisible by 100, go to step 3. Otherwise, go to step 4.
3. If the year is evenly divisible by 400, go to step 4. Otherwise, go to step 5.
4. The year is a leap year (February has 29 days).
5. The year is not a leap year (February has 28 days).