phone number

[Isprog]

What funcion to use to make a program like this

converting a telphone number with prefix to phone number without prefix

[url=http://postimg.org/image/6ols9krbp/][img]http://s10.postimg.org/6ols9krbp/image.jpg[/img][/url]


http://s10.postimg.org/vhvca8ac9/image.png