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2 questions on RegEx

Posted on 2011-09-16
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Last Modified: 2012-05-12
1) how do I code a RegEx to require 8 numeric digits, with the first digit 1 or greater?

2) What's the popular website where I can test Reg Ex'es online?

Thanks!
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Question by:newbieweb
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5 Comments
 
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Accepted Solution

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Patrick Matthews earned 500 total points
ID: 36549271
For #1:

[1-9]\d{7}

To test the whole string:

^[1-9]\d{7}$

For #2, I would use Expresso:

http://www.ultrapico.com/Expresso.htm
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Author Closing Comment

by:newbieweb
ID: 36549321
Thanks!
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Author Comment

by:newbieweb
ID: 36549344
The $ means the string must terminate there?
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Author Comment

by:newbieweb
ID: 36549399
Oddly, my "poor man's" version works but yours fails:

'^[1-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'

'^[1-9]\d{7}'

Any idea why?
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LVL 92

Expert Comment

by:Patrick Matthews
ID: 36549946
Each language has its own implemntation of RegExp.  In some dialects $ terminates a string, but some others use a different character.  Also, some dialects use \d for any digit 0-9, but other dialects do not.
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