Validating data extracts are pay dating sites worth it

On the contrary, the 555 prefix is reserved for fake-out phone numbers. :\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(? -Adam My gut feeling is reinforced by the amount of replies to this topic - that there is a virtually infinite number of solutions to this problem, none of which are going to be elegant.

Those numbers are guaranteed not to connect to an actual phone number so they're often used in television and movies to ensure that a viewer doesn't try to call the number and end up harassing some poor [email protected] While that was true decades ago, it is no longer true. Honestly, I would recommend you don't try to validate phone numbers.

Everything else is just for user's convenience to protect against some (but not all) typos and does not validate anything. 123 Out-of-country format from US 1 (234) 567-8901 ext.

The international accounts for an optional initial ' ' and country code. Valid matches would be: You'll have a hard time dealing with international numbers with a single/simple regex, see this post on the difficulties of international (and even north american) phone numbers.

Rather than try to solve all that, take the input and "pre-strip" it of all formatting fluff until you have just the "number". How are extensions (e.g., 111-222-3333 x 44444) going to be handled? So far, it's been working with everything they've thrown at it, but if errors come up, I'll update this answer.

Doing this solves 2 problems - testing the result is now easy and you can now ensure that values rendered back out for display can all be formatted consistently. Regex: Here's a wonderful pattern that most closely matched the validation that I needed to achieve.

Best example here is credit card authorization for a purchase.

I would also consider any of the following as valid entries on a web site: I agree with the sentiment here, but sometimes it's nice to perform validation when the phone number is actually going to be used for something important in the interest of the user.

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