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@NogDogJul 18.2008 — #I usually use the function described in [url=http://www.iamcal.com/publish/articles/php/parsing_email/]this article[/url] as the most complete implementation of the RFC I've seen.@NogDogJul 18.2008 — #
Interesting. I did some testing (under PHP 5.2.1) and found that at least if the very last character is a newline, it passes validation. However, note that the FILTER_SANITIZE_EMAIL option will strip out that newline, so you could use a 2-step process (though it's less than ideal if you prefer to outright reject everything that's not valid):
I suspect having to run filter_var twice will pretty much eat up any processing time advantage over a single preg_match() call, but it's still pretty clean code-wise.
Regular expression for email address
Hi all Ive based my registration check on a google search but unfortunately I cant find the link to it now and im now having trouble with people registering with valid email addresses.
The type of email address Im having a problem with is
[email][email protected]
However when I remove the “.” between my firstname and surname this registers correctly.
My expression is
[code=php]if (!eregi(‘^[a-zA-Z]+[a-zA-Z0-9_-]*@([a-zA-Z0-9_-]+){1}(.[a-zA-Z0-9_-]+){1,2}’, stripslashes(trim($_POST[’emailaddress’])) )) {
$errors[] = ‘<font color=”#980000″>A valid email address.</font>’;
}
Could anyone let me know where to put the additional string in and also if there are any email scenarios which may result in other users not being able to register with a valid email address.
Regards
Mike
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@NogDogJul 18.2008 — #I usually use the function described in 0
@NogDogJul 18.2008 — #http://lists.virus.org/sec-adv-0704/msg00107.html <-- This is why[/QUOTE]
Interesting. I did some testing (under PHP 5.2.1) and found that at least if the very last character is a newline, it passes validation. However, note that the FILTER_SANITIZE_EMAIL option will strip out that newline, so you could use a 2-step process (though it's less than ideal if you prefer to outright reject everything that's not valid):
[code=php]
$email = filter_var($email, FILTER_SANITIZE_EMAIL);
if(filter_var($mail, FILTER_VALIDATE_EMAIL) === false)
{
// reject it
}
[/code]I suspect having to run filter_var twice will pretty much eat up any processing time advantage over a single preg_match() call, but it's still pretty clean code-wise.