Given two dates what is the best way of finding the number of weekdays in PHP?

Question

The title is pretty much self explanatory. Given two dates what is the best way of finding the number of week days using PHP? Week days being Monday to Friday.

For insta

Answer 1

If you are creating an invoicing system, you have to think about the bank holidays, Easter, etc. It is not simple to compute it.

The best solution I have ever seen is to pregenerate a table with days and its type to SQL database (row per day = 365 rows per year) and then perform simple count query with proper selection (WHERE clause).

You can find this solution fully described in Joe Celko's Thinking in Sets: Auxiliary, Temporal, and Virtual Tables in SQL