檢查電話號碼格式是否正確
還會顯示分類:FIXED_LINE、MOBILE、VOIP(070門號)、TOLL_FREE(080門號)
DEMO:
https://libphonenumber.appspot.com
DEMO:
https://libphonenumber.appspot.com
ref:
https://www.twilio.com/blog/validating-phone-numbers-effectively-with-c-and-the-net-frameworks
https://medium.com/frochu/libphonenumber-example-app-f60680faa599