isValidPhoneNumber function

bool isValidPhoneNumber(
  1. String phone
)

isValidPhoneNumber checks if a number is either a Kenyan , American, UK or Belgium phone number

Implementation

bool isValidPhoneNumber(String phone) {
  return kenyanPhoneRegExp.hasMatch(phone) ||
      (americanPhoneRegExp.hasMatch(phone)) ||
      (unitedKingdomRegExp.hasMatch(phone)) ||
      (genericInternationalRegExp.hasMatch(phone));
}