Validating a phone number backdating document
Certificate is a confirmation of the valid checking result by the SNDeep Info service and will be useful for those who want to share those in the blog, forum or on the Internet.
"12345678901" would match the regex w/o those two characters - although it is 11 chars and starts with a 1!
Below are a few phone numbers that you might encounter when using real data, write a single regular expressions that matches the number and captures the proper area code.
To grab the area code from the phone numbers, we can simply capture the first three digits, using the expression (\d).
However, to match the full phone number as well, we can use the expression 1?
', and the rest of the digits '\d' and '\d' respectively. ' to catch the space or dashes between each component.