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@NogDogMay 30.2011 — #Frankly, I think it's unnecessary effort to validate that the email is in a specific format, as that does nothing to verify that it is (a) an actual email address or (b) belongs to the person submitting it. But if you feel it is necessary, the most thorough implementation I've seen that will not generate false negatives is http://www.iamcal.com/publish/articles/php/parsing_email/ .@NogDogJun 07.2011 — #
Which is a valid email address syntax (even if you're pretty sure 99% of the time it will be wrong ? ), so the link I gave you won't help you detect it. You could throw in an additional check to see it starts with "www." and ask the user if they really meant that, I suppose?
@NogDogJun 08.2011 — #
The testing for a "www." at the beginning of the email does not require the extra processing that a regular expression check would use. Therefore I was thinking of keeping it separate from any format check you might otherwise be doing, since that is a separate issue. (It is entirely "legal" for someone to have an email address that begins with "www." -- maybe their name is William Walter Winston Smith III, and they created an address of "[email protected] ".) Testing for the "www." separately gives you the opportunity to handle it differently than an illegal format, such as by by providing an "are you sure?" screen before final form entry, rather than outright rejecting what might, in fact, be their correct email address and then you losing a customer due to their frustration or outright inability to submit your form.@NogDogJun 10.2011 — #
Don't know if they've fixed it in recent versions, but it used to let things like a terminal newline through -- which is easily "fixed" by trim()-ing the value first.
email validation
hello
I have following function for email validation:
[CODE]
function is_valid_email($email) {
return preg_match(‘#^[a-z0-9.!#$%&’*+-/=?^_`{|}~]+@([0-9.]+|([^s]+.+[a-z]{2,6}))$#si’, $email);
}
but I want prevent user to enter www. in front of email address
what extra regular expression do I need?
Thank in advance
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@NogDogMay 30.2011 — #Frankly, I think it's unnecessary effort to validate that the email is in a specific format, as that does nothing to verify that it is (a) an actual email address or (b) belongs to the person submitting it. But if you feel it is necessary, the most thorough implementation I've seen that will not generate false negatives is 0
@NogDogJun 07.2011 — #Thank you nogdog
I know this is unnecessary but I have some ... users that don't know what is email format and insert someting like[email protected] [/QUOTE]
Which is a valid email address syntax (even if you're pretty sure 99% of the time it will be wrong ? ), so the link I gave you won't help you detect it. You could throw in an additional check to see it starts with "www." and ask the user if they really meant that, I suppose?
[code=php]
if(stripos($string, 'www.') === 0) {
// are you sure?
}
[/code]0
@NogDogJun 08.2011 — #there is no regular expression Rule?[/QUOTE]
The testing for a "www." at the beginning of the email does not require the extra processing that a regular expression check would use. Therefore I was thinking of keeping it separate from any format check you might otherwise be doing, since that is a separate issue. (It is entirely "legal" for someone to have an email address that begins with "www." -- maybe their name is William Walter Winston Smith III, and they created an address of "
0
@NogDogJun 10.2011 — #There's also an[url=http://www.php.net/manual/en/filter.filters.validate.php]e-mail validation filter[/url] built into PHP.
[code=php]filter_var('[email protected]', FILTER_VALIDATE_EMAIL)[/code][/QUOTE]
Don't know if they've fixed it in recent versions, but it used to let things like a terminal newline through -- which is easily "fixed" by trim()-ing the value first.