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Title : email validator check checker email e-mail email address
Categories : PHP, Email, Regexps Update Picture
Denis Merkouchev
Date : Apr 29th 1999
Grade : 5 of 5 (graded 2 times)
Viewed : 17364
File : No file for this code example.
Images : No Images for this code example.
Search : More code by Denis Merkouchev
Action : Grade This Code Example
Tools : My Examples List
Code

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<?php
{
if ( eregi("(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)", $email, $arr_vars) or !eregi
("^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$", $email,
$arr_vars))
{
return(false);
}
else
{
return(true);
}
}
?>



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User Comments
 Martin Geisler wrote : 92
Hi,

well, this seems to be a good email-check, but there`s a 
little mistake. 
if you have an email-address like anything@your-
host.com it will be wrong because of the dash in the 
hostname.

Any ideas?

Martin 		 
 Jussi Paju wrote : 178
You need to change

"^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$"

into

"^.+\@(\[?)[-a-zA-Z0-9\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$"

 
 Frdric De Leersnijder wrote : 285
I`ve "enhanced" the e-mail checker a bit more. Crap like
#!... in the address was accepted. I`ve also taken the past
remarks into consideration. list-request@some-host.com is a
valid address.

function validateEmail($email) {  
  if (eregi("(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)", $email) ||
!eregi
("^.+\@(\[?)[-a-zA-Z0-9\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$",
$email)) {
    return(false); 
  } else {
    list($user, $domain) = explode(`@`, $email);
    if ((!eregi("^[a-zA-Z0-9\.\-]+$", $user)) ||
(!eregi("^[a-zA-Z0-9\.\-]+$", $domain))) {
      return false;
    } else {
      return(true); 
    }
  } 
} 		 
  Vincent wrote : 316
Tested out this script. It worked well, including the dash. But i found another problem with it - the underscore. An 
email address like my_name@host.com will be invalid. It should be accepted. Anyone can correct this problem? 
Thanks=) 		 
 Ilia Alshanetsky wrote : 339
A small modification to address the issue with e-mail 
address that contain _. With this fix email address` can 
now have _ in them.

function validateEmail($email) { 
    if (eregi("(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)", 
$email) || !eregi ("^.+\@(\[?)[-_a-zA-Z0-9\.]+\.([a-zA-Z]
{2,3}|[0-9]{1,3})(\]?)$", $email)) { 
        return 1; 
    } 
    else { 
        list($user, $domain) = explode(`@`, 
$email); 
        if ((!eregi("^[_a-zA-Z0-9\.\-]+$", 
$user)) || (!eregi("^[_a-zA-Z0-9\.\-]+$", $domain))) { 
            return 1; 
        } 
        else { 
            return 0; 
        } 
    }
} 		 
 Ilia Alshanetsky wrote : 340
I used C style returns.
1 means there was an error, 0 means everything is fine. 		 
 Ian Warner wrote :632
What happens if the user has an email address:

me.here@yourdomain.com

It returns false

Can you add this support please - other than that an excellent email validation function