Trich so dien thoai

Tim va lay toan bo so dien thoai trong van ban hoac trang web.

Cong cu dang duoc lam

Phan engine dung chung da xong; cong cu nay dang cho duoc noi vao. Trong luc cho, ban co the dung CSV sang JSON, JSON sang CSV hoac doi ky tu phan cach.