Comments on: What is a valid email address? http://labs.phurix.net/posts/what-is-a-valid-email-address Research and development Thu, 05 Jan 2012 01:26:23 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Michael http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-246436 Michael Tue, 02 Nov 2010 23:16:14 +0000 http://www.hm2k.com/?p=205#comment-246436 I've taken your advise. There's now revision control and documentation/comments. I’ve taken your advise. There’s now revision control and documentation/comments.

]]> By: hm2k http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-243930 hm2k Mon, 25 Oct 2010 23:17:25 +0000 http://www.hm2k.com/?p=205#comment-243930 www.validemail.org has been updated. @Michael Your script is poorly maintained, consider using revision control. http://www.validemail.org has been updated.

@Michael Your script is poorly maintained, consider using revision control.

]]> By: hm2k http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240134 hm2k Thu, 07 Oct 2010 22:11:55 +0000 http://www.hm2k.com/?p=205#comment-240134 The date is a link to the commend... eg: http://www.hm2k.com/posts/what-is-a-valid-email-address#comment-196432 I'll check it out. The date is a link to the commend…

eg: http://www.hm2k.com/posts/what-is-a-valid-email-address#comment-196432

I’ll check it out.

]]> By: Michael http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240127 Michael Thu, 07 Oct 2010 16:46:19 +0000 http://www.hm2k.com/?p=205#comment-240127 I linked to it a few comments back. I didn't want to spam your site with a second posting. (It also explains the development of the regular expression and provides a class to make it easy to manipulate and use). I linked to it a few comments back. I didn’t want to spam your site with a second posting.

(It also explains the development of the regular expression and provides a class to make it easy to manipulate and use).

]]> By: hm2k http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240125 hm2k Thu, 07 Oct 2010 16:36:57 +0000 http://www.hm2k.com/?p=205#comment-240125 Couldn't you have used a pastebin or better, maintain your code in a public repository? If you do, I'll consider adding it into production testing. Couldn’t you have used a pastebin or better, maintain your code in a public repository?

If you do, I’ll consider adding it into production testing.

]]> By: Michael http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240124 Michael Thu, 07 Oct 2010 16:30:01 +0000 http://www.hm2k.com/?p=205#comment-240124 /^(?!(?>(?1)\x22?\x5C?[\x00-\x7F]\x22?){255,})(?!(?>(?1)\x5C?[\x00-\x7F]){65,}(?1)@)((?>(?>(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(\x28(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21-\x27\x2A-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]|(?2)))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x29))+(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?)|(?>(?>(?>\x0D\x0A)?[\x20\x09])+))?)(?>[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+|(?>\x22(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x22))(?>(?1)\.(?1)(?>[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+|(?>\x22(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x22)))*(?1)@(?>(?>(?1)\[(?:(?>IPv6:(?>(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){7})|(?>(?!(?:.*[a-f0-9][:\]]){8,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?)))|(?>(?>IPv6:(?>(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){5}:)|(?>(?!(?:.*[a-f0-9]:){6,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4})?::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4}:)?)))?(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])(?>\.(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}))\](?1))|(?>(?!.*(?1)[a-z0-9-]{64,})(?1)(?>(?>xn--)?[a-z0-9]+(?>-[a-z0-9]+)*(?1)\.(?1)){0,126}(?>xn--)?[a-z0-9]+(?>-[a-z0-9]+)*(?1)))$/isD Allows a dot-atom (full character range) local part, quoted-string local part, obsolete local part (mixture of (dot) atoms and quoted strings), domain names, internationalized labels, domain literals (IPv4 and IPv6), folding white spaces and nested comments. 1,394 characters. Very long, but much shorter than other expressions which seek to completely verify an email address (Perl's infamous example). Although, the fact that it's long is irrelevant: my intention was to simply show that it can be done. I hope this is helpful. (Note: I'm hoping HTML tags work in comments -- if not, please remove "pre" tags. Thanks). /^(?!(?>(?1)\x22?\x5C?[\x00-\x7F]\x22?){255,})(?!(?>(?1)\x5C?[\x00-\x7F]){65,}(?1)@)((?>(?>(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(\x28(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21-\x27\x2A-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]|(?2)))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x29))+(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?)|(?>(?>(?>\x0D\x0A)?[\x20\x09])+))?)(?>[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+|(?>\x22(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x22))(?>(?1)\.(?1)(?>[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+|(?>\x22(?>(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?(?>[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|\x5C[\x00-\x7F]))*(?>(?>(?>\x0D\x0A)?[\x20\x09])+)?\x22)))*(?1)@(?>(?>(?1)\[(?:(?>IPv6:(?>(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){7})|(?>(?!(?:.*[a-f0-9][:\]]){8,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?)))|(?>(?>IPv6:(?>(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){5}:)|(?>(?!(?:.*[a-f0-9]:){6,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4})?::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4}:)?)))?(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])(?>\.(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}))\](?1))|(?>(?!.*(?1)[a-z0-9-]{64,})(?1)(?>(?>xn--)?[a-z0-9]+(?>-[a-z0-9]+)*(?1)\.(?1)){0,126}(?>xn--)?[a-z0-9]+(?>-[a-z0-9]+)*(?1)))$/isD

Allows a dot-atom (full character range) local part, quoted-string local part, obsolete local part (mixture of (dot) atoms and quoted strings), domain names, internationalized labels, domain literals (IPv4 and IPv6), folding white spaces and nested comments. 1,394 characters. Very long, but much shorter than other expressions which seek to completely verify an email address (Perl’s infamous example). Although, the fact that it’s long is irrelevant: my intention was to simply show that it can be done.

I hope this is helpful.

(Note: I’m hoping HTML tags work in comments — if not, please remove “pre” tags. Thanks).

]]> By: hm2k http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240121 hm2k Thu, 07 Oct 2010 15:25:42 +0000 http://www.hm2k.com/?p=205#comment-240121 @Dominic Sayers 1. I purposely chose to link to what I'm using, instead of websites subject to change. However I will update the copy of your script. 2. I'm aware of RFC 5322. No further updates will be added to the post itself, however I may re-address the topic in a new post at a later date. Thanks for the feedback. @Michael That statement was written about the same time as RFC 5322 was published so I dare say that things have changed in that time. All that aside, you should provide evidence to support such radical statements otherwise you're helping nobody. @Dominic Sayers

1. I purposely chose to link to what I’m using, instead of websites subject to change. However I will update the copy of your script.

2. I’m aware of RFC 5322. No further updates will be added to the post itself, however I may re-address the topic in a new post at a later date.

Thanks for the feedback.

@Michael

That statement was written about the same time as RFC 5322 was published so I dare say that things have changed in that time. All that aside, you should provide evidence to support such radical statements otherwise you’re helping nobody.

]]> By: Michael http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-240119 Michael Thu, 07 Oct 2010 11:24:08 +0000 http://www.hm2k.com/?p=205#comment-240119 "Remember, regex alone CANNOT define a valid email address, there is no “ultimate” regex, you need to use other systems for validation." That's just not true. You CAN (and I'd even say there IS). “Remember, regex alone CANNOT define a valid email address, there is no “ultimate” regex, you need to use other systems for validation.”

That’s just not true. You CAN (and I’d even say there IS).

]]> By: Dominic Sayers http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-236917 Dominic Sayers Fri, 24 Sep 2010 09:22:21 +0000 http://www.hm2k.com/?p=205#comment-236917 I've made several revisions to is_email() since the version you have here. The current version is 2.4 and you can download it here: http://www.dominicsayers.com/isemail/ I think Ast Derek is saying that you haven't included is_email() in the list of resources at the foot of your article. It's up to you whether you do that, of course. Two other suggestions: 1. On the http://validemail.org page you might choose to give download locations for the validators you are comparing. This would allow people to get at the latest version of each validator rather the version you have hosted on your site. 2. RFC 5322 has superseded RFC 2822. It's very similar so you shouldn't have much trouble updating this page if you choose to do so. Good work! I’ve made several revisions to is_email() since the version you have here. The current version is 2.4 and you can download it here: http://www.dominicsayers.com/isemail/

I think Ast Derek is saying that you haven’t included is_email() in the list of resources at the foot of your article. It’s up to you whether you do that, of course.

Two other suggestions:

1. On the http://validemail.org page you might choose to give download locations for the validators you are comparing. This would allow people to get at the latest version of each validator rather the version you have hosted on your site.

2. RFC 5322 has superseded RFC 2822. It’s very similar so you shouldn’t have much trouble updating this page if you choose to do so.

Good work!

]]> By: hm2k http://labs.phurix.net/posts/what-is-a-valid-email-address/comment-page-1#comment-212596 hm2k Wed, 30 Jun 2010 09:16:06 +0000 http://www.hm2k.com/?p=205#comment-212596 @Ast Derek Not sure what you mean exactly. I have no control over where Dominic Sayers does or does not link to. @Ast Derek

Not sure what you mean exactly. I have no control over where Dominic Sayers does or does not link to.

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