preg_match / valid email address

[aaron]

I need some help with validating an email address. Right now, I am doing this:

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {
return 0;
}
}

It works great, but it doesn't allow a number at the beginning.

For example
2c***@forme.jom can not be entered
19**@forme.jom can not be entered

but,
co***@forme.jom can be entered
d19**@forme.jom can be entered

Can someone help me with the preg_match?

Thanks,
aaron

[Ian.H]

On Mon, 23 Aug 2004 08:14:23 -0700, aaron wrote:

I need some help with validating an email address. Right now, I am doing this:

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {
return 0;
}
}

It works great, but it doesn't allow a number at the beginning.

For example
2c***@forme.jom can not be entered
19**@forme.jom can not be entered

but,
co***@forme.jom can be entered
d19**@forme.jom can be entered

Can someone help me with the preg_match?

Thanks,
aaron

It's not perfect (as are none of these solutions) but I have pretty good
results from using:
function check_email($addy, $return_mx_records = false) {
if (empty($addy)) return false;

if (!preg_match('/^[a-zA-Z0-9&\'\.\-_\+]+\@[a-zA-Z0-9.-]+\.+[a-zA-Z]{2,6}$/', $addy)) {
return false;
}

$mx_exists = false;
if (getmxrr(array_pop(explode('@', $addy)), $mx_records)) {
$mx_exists = true;
}

if ($mx_exists) {
return ($return_mx_records) ? $mx_records : true;
} else {
return false;
}
}
This also checks for existence of an MX record for the user-given domain.
If none is found, it's an invalid address.

Your example is using regex for pretty much useless matching, you may
aswell have used:
if (strstr('@', $address) and (strstr('.', $address)) {
/* Mail address is valid (but really could be anything */
} else {
/* Would only reach here if there was no @ or . chars, so
* '................foo@/$£%££djuid....................invalid'
* is a valid address? ;)
*/
}
HTH.

Regards,

Ian

--
Ian.H
digiServ Network
London, UK
http://digiserv.net/

[Justin Koivisto]

aaron wrote:

I need some help with validating an email address. Right now, I am doing this:

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {
return 0;
}
}

It works great, but it doesn't allow a number at the beginning.

For example
2c***@forme.jom can not be entered
19**@forme.jom can not be entered

but,
co***@forme.jom can be entered
d19**@forme.jom can be entered

Can someone help me with the preg_match?

I've been having good results with this:

/([a-z][a-z0-9_.-\/]*@[^\s\"\)\?<>]+\.[a-z]{2,6})/i

Some of the stuff in there is so you can have something like:

"My email address is [e-mail]." or "Email me ([e-mail]) for
more info."

and you will only get the "[e-mail]" part.

--
Justin Koivisto - sp**@koivi.com
http://www.koivi.com

[steve]

"aaron" wrote:

I need some help with validating an email address. Right now, I am
doing this:

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {
return 0;
}
}

It works great, but it doesn’t allow a number at the beginning.

For example
2c***@forme.jom can not be entered
19**@forme.jom can not be entered

but,
co***@forme.jom can be entered
d19**@forme.jom can be entered

Can someone help me with the preg_match?

Thanks,
aaron

See this thread:
http://dbforumz.com/PHP-Email-Valida...ict140155.html

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[aaron]

steve <Us************@dbForumz.com> wrote in message news:<41********@news.athenanews.com>...

"aaron" wrote:

> I need some help with validating an email address. Right now, I am
> doing this:
>
> function sys_is_valid_email ($s) {
> if (preg_match ("/^.+@.+\..+$/", $s)) {
> return 1;
> } else {

return 0;

> }
> }
>
> It works great, but it doesn?t allow a number at the beginning.
>
> For example
> 2c***@forme.jom can not be entered
> 19**@forme.jom can not be entered
>
> but,
> co***@forme.jom can be entered
> d19**@forme.jom can be entered
>
> Can someone help me with the preg_match?
>
> Thanks,
> aaron

See this thread:
http://dbforumz.com/PHP-Email-Valida...ict140155.html

If you use the one suggested above, it works great as long as you
don't have an email address like this: 22*******@asdf.com.

There is a person I know that tried to sign up online with an email
address starting off with 5 numbers. That the link above...
preg_match('/^[a-z0-9&\'\.\-_\+]+@[a-z0-9\-]+\.([a-z0-9\-]+\.)
*?[a-z]+$/is',
$email) ... doesn't let you have 5 numbers.

I have know idea why someone would have that many numbers. Any other
suggestions?

[Justin Koivisto]

aaron wrote:

steve <Us************@dbForumz.com> wrote in message news:<41********@news.athenanews.com>...

"aaron" wrote:

> I need some help with validating an email address. Right now, I am
> doing this:
>
> function sys_is_valid_email ($s) {
> if (preg_match ("/^.+@.+\..+$/", $s)) {
> return 1;
> } else {

return 0;

> }
> }
>
> It works great, but it doesn?t allow a number at the beginning.
>
> For example
> 2c***@forme.jom can not be entered
> 19**@forme.jom can not be entered
>
> but,
> co***@forme.jom can be entered
> d19**@forme.jom can be entered
>
> Can someone help me with the preg_match?
>
> Thanks,
> aaron

See this thread:
http://dbforumz.com/PHP-Email-Valida...ict140155.html

If you use the one suggested above, it works great as long as you
don't have an email address like this: 22*******@asdf.com.

There is a person I know that tried to sign up online with an email
address starting off with 5 numbers. That the link above...
preg_match('/^[a-z0-9&\'\.\-_\+]+@[a-z0-9\-]+\.([a-z0-9\-]+\.)
*?[a-z]+$/is',
$email) ... doesn't let you have 5 numbers.

I have know idea why someone would have that many numbers. Any other
suggestions?

Don't all valid email address have to start with a letter first? IIRC,
that was stated in the RFC.

--
Justin Koivisto - sp**@koivi.com
http://www.koivi.com

[David Mackenzie]

On 24 Aug 2004 08:01:44 -0700, re*********@msn.com (aaron) wrote:

If you use the one suggested above, it works great as long as you
don't have an email address like this: 22*******@asdf.com.

There is a person I know that tried to sign up online with an email
address starting off with 5 numbers. That the link above...
preg_match('/^[a-z0-9&\'\.\-_\+]+@[a-z0-9\-]+\.([a-z0-9\-]+\.)
*?[a-z]+$/is',
$email) ... doesn't let you have 5 numbers.

I have know idea why someone would have that many numbers. Any other
suggestions?

People using a university e-mail account will often have an address
comprising their student id which could be six or seven numbers.

--
David ( @priz.co.uk )

[aaron]

Justin Koivisto <sp**@koivi.com> wrote in message news:<2a*****************@news7.onvoy.net>...

aaron wrote:

steve <Us************@dbForumz.com> wrote in message news:<41********@news.athenanews.com>...

"aaron" wrote:
> I need some help with validating an email address. Right now, I am
> doing this:
>
> function sys_is_valid_email ($s) {
> if (preg_match ("/^.+@.+\..+$/", $s)) {
> return 1;
> } else { return 0; > }
> }
>
> It works great, but it doesn?t allow a number at the beginning.
>
> For example
> 2c***@forme.jom can not be entered
> 19**@forme.jom can not be entered
>
> but,
> co***@forme.jom can be entered
> d19**@forme.jom can be entered
>
> Can someone help me with the preg_match?
>
> Thanks,
> aaron
See this thread:
http://dbforumz.com/PHP-Email-Valida...ict140155.html

If you use the one suggested above, it works great as long as you
don't have an email address like this: 22*******@asdf.com.

There is a person I know that tried to sign up online with an email
address starting off with 5 numbers. That the link above...
preg_match('/^[a-z0-9&\'\.\-_\+]+@[a-z0-9\-]+\.([a-z0-9\-]+\.)
*?[a-z]+$/is',
$email) ... doesn't let you have 5 numbers.

I have know idea why someone would have that many numbers. Any other
suggestions?

Don't all valid email address have to start with a letter first? IIRC,
that was stated in the RFC.

I thought so, but I know for a fact that MSN/Hotmail lets you use
numbers at the beginning.

Wow, does that mean Microsoft would manipulate a standard? That
doesn't sound like Microsoft. :)

[R. Rajesh Jeba Anbiah]

re*********@msn.com (aaron) wrote in message news:<dd**************************@posting.google. com>...

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {
return 0;
}
}

It works great, but it doesn't allow a number at the beginning.

Try <http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html>

--
| Just another PHP saint |
Email: rrjanbiah-at-Y!com

[aaron]

ng**********@rediffmail.com (R. Rajesh Jeba Anbiah) wrote in message news:<ab**************************@posting.google. com>...

re*********@msn.com (aaron) wrote in message news:<dd**************************@posting.google. com>...

function sys_is_valid_email ($s) {
if (preg_match ("/^.+@.+\..+$/", $s)) {
return 1;
} else {

return 0;

}
}

It works great, but it doesn't allow a number at the beginning.

Try <http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html>

Pardon my ignorance, but does that mean I would have to call a perl
script from PHP to validate?

[R. Rajesh Jeba Anbiah]

re*********@msn.com (aaron) wrote in message news:<dd**************************@posting.google. com>...
<snip>

Try <http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html>

Pardon my ignorance, but does that mean I would have to call a perl
script from PHP to validate?

I didn't mean that. Just grab the logic and transform it into a PHP script.

--
| Just another PHP saint |
Email: rrjanbiah-at-Y!com