PHP Form Data Validation: Validate arrays of data using a list of rules

This class can validate arrays of data using a list of rules.

It can as parameters take an array with data values and another array with a list of rules.

The class validate the data values according to the given rules and sets a class variable with the list of errors for each data entry that is invalid.

Currently the class can validate data values with rules like:

- Required
- Character Length
- Alphanumeric
- Email
- Alpha
- Password
- URL
- Range