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Regular Expression Details

Title Test Find Pattern Title
Expression
^ISBN\s(?=[-0-9xX ]{13}$)(?:[0-9]+[- ]){3}[0-9]*[xX0-9]$
Description
This pattern validates ISBN numbers. I've written a full description about it here: http://regexblogs.com/dneimke/posts/201.aspx
Matches
ISBN 90-70002-34-5 | ISBN 90-70002-34-x
Non-Matches
ISBN 90-70002-34-5x | ISBN 90-700-02-34-5
Author Rating: Not yet rated. Darren Neimke
Source
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