Time and Date: Work Days
Si Cranmer (contact me)
This class can be used to calculate the number of business days between two dates.
It can calculates the number of days excluding business holydays and weekend days that occur between the two given dates.
The class can also check if a given date and is a valid business day.
Currently it considers only United Kingdom holidays but the class can easily be expanded to support other countries.
Click here for detailed information about this class on phpclasses.org