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Regular expression validation

Palpatine43
New User

May 18, 2013, 4:08 PM

Post #1 of 6 (19007 views)

Regular expression validation	Can't Post

I am trying to learn some regular expressions to validate different inputs. Can someone help me out with these?

Provide a perl regular expression that can be used to validate each of the following pattern descriptions:
• a 3 digit area code
• a 3 digit area code that must be enclosed in parenthesis
• a 3 digit area code that may be enclosed in parenthesis
• a 9 digit social security number
• a 9 digit social security number that must include dashes after the 3rd and 5th digit
• a 9 digit social security number that might include dashes after the 3rd and 5th digit

Thank you!

Laurent_R
Veteran / Moderator

May 19, 2013, 7:52 AM

Post #2 of 6 (18995 views)

Re: [Palpatine43] Regular expression validation [In reply to]	Can't Post

I do not know if there is anything special about area codes, but a 3-digit code could be:

Code

/\d{3}/ or /\d\d\d/ or /[0-9]{3}/

The first one is the simplest, but I wanted to show that there are other ways to do the same (TIMTOWTDI).

3-digit code enclosed in parens:

Code

 /\(\d{3}\)/

With optional parens:

Code

 /\(?\d{3}\)?/

For sosical security numbers, I don't now how they look like in your country.

Kenosis
User

May 19, 2013, 11:13 PM

Post #3 of 6 (18982 views)

Re: [Palpatine43] Regular expression validation [In reply to]	Can't Post

Is this an end-of-the-semester exam?

(This post was edited by Kenosis on May 19, 2013, 11:13 PM)

BillKSmith
Veteran

May 20, 2013, 10:45 AM

Post #4 of 6 (18965 views)

Re: [Laurent_R] Regular expression validation [In reply to]	Can't Post

I do not know if there is anything special about area codes,...

Quote

This is exactly the reason for preferring a module. Someone else is responsible for these details (and keeping them up-to-date.)
Good Luck,
Bill

hwnd
User

May 20, 2013, 2:28 PM

Post #5 of 6 (18958 views)

Re: [BillKSmith] Regular expression validation [In reply to]	Can't Post

I already answered you on your cross post here. http://perlguru.com/gforum.cgi?post=74894;sb=post_latest_reply;so=ASC;forum_view=forum_view_collapsed;session=7398f6a0f2a7cf0f211bd60c2019a5a1;page=unread#unread

Laurent_R
Veteran / Moderator

May 20, 2013, 3:05 PM

Post #6 of 6 (18955 views)

Re: [BillKSmith] Regular expression validation [In reply to]	Can't Post

In Reply To

I do not know if there is anything special about area codes,...

Quote

This is exactly the reason for preferring a module. Someone else is responsible for these details (and keeping them up-to-date.)

Yeah, true in general, except that the world is vast and that the module you are talking about is only for US areas code, and the OP has not specified if he or she was talking about US area codes or those from another country

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