I'm trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
- 1-234-567-8901 x1234
- 1-234-567-8901 ext1234
- 1 (234) 567-8901
I'll answer with my current attempt, but I'm hoping somebody has something better and/or more elegant.