PHP: PHP Phone Number Validation

There are different formats in which forms present you with a way to input your phone number. Some have a 3-digit field between parenthesis for the area code, a second 3-digit field and finally a third 4-digit field. Some coders like to record the dashes and the parenthesis, like this: (123) 456-7890 or 123-456-7890 or simply 456-7890 Let’s say you recorded the phone number using the format that uses parenthesis. You have hundreds, maybe even thousands of records. Now imagine your boss n