Question

I have a text file having numbers like this [phone] (start with + and is 11 digit long) separated by tab whitespaces (seems like) in a text among with other data.

How can I match only those who have a + before the text and match the first 11 characters if they’re present and they’re all digits?

Updated:

This is the input

[phone]    http://google.com   2012-05-07 11:30:06
[phone]    http://google.com   2012-05-07 19:26:21

And the output should be an array with matching results

[12345678912, 12345678913]

Answer 1

Use this…

matches = str.scan(/^\+(\d{11})/m).flatten!;

CodePad.