Comments on: Email address validation http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/ They told me at the front desk i could have a puppy... Wed, 28 Oct 2009 19:18:41 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Paul Jakma http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/comment-page-1/#comment-30695 Paul Jakma Fri, 12 Oct 2007 15:42:04 +0000 http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/#comment-30695 The regex here is slightly wrong (less wrong than most though ;) ): - the host portion is wrong, as noirin notes - it's locale-dependent, e.g. a-z will match non-ASCII chars in many locales, and it's uses an ASCII-ordering dependent range (very cute, but broken ;) ). There's also some redundancy in the regex which could be avoided. I've had a back and forth with Stephen about this back in March, and I think we sort of agreed on the above points. As he's not updated this post, I've gone and <a href="http://blogs.sun.com/paulj/entry/email_regex_address_validation_aka" rel="nofollow">blogged about it</a>. Thanks :) The regex here is slightly wrong (less wrong than most though ;) ):

- the host portion is wrong, as noirin notes
- it’s locale-dependent, e.g. a-z will match non-ASCII chars in many locales, and it’s uses an ASCII-ordering dependent range (very cute, but broken ;) ).

There’s also some redundancy in the regex which could be avoided.

I’ve had a back and forth with Stephen about this back in March, and I think we sort of agreed on the above points. As he’s not updated this post, I’ve gone and blogged about it.

Thanks :)

]]> By: [nɚdʃik] » Blog Archive » TLDs with MX records… http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/comment-page-1/#comment-9370 [nɚdʃik] » Blog Archive » TLDs with MX records… Wed, 04 Apr 2007 22:45:48 +0000 http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/#comment-9370 [...] Stephen’s recently been questioned a bit about his email address validation regex - which has a few problems… Notably, it doesn’t allow for addresses like rob@uk, which I’m assured once existed (although I don’t believe it still does). [...] [...] Stephen’s recently been questioned a bit about his email address validation regex – which has a few problems… Notably, it doesn’t allow for addresses like rob@uk, which I’m assured once existed (although I don’t believe it still does). [...]

]]> By: Mark http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/comment-page-1/#comment-82 Mark Wed, 08 Feb 2006 00:35:06 +0000 http://blogs.nonado.net/diamond/2006/02/08/email-address-validation/#comment-82 Thank you _so_ much for all the help. Thank you _so_ much for all the help.

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