[PHP] - Quick Question..

[Eric]

Hi,

I'm currently writing a script.. and in that script they have to supply an email etc.. and am looking for a way to validate the email. I was wondering if I used something like below... if it would work.

(This is my first time doing anything with validating an email etc, so please be kind, lol)

$em = eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email);

if ($em != eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email))
{
  echo 'Sorry, you entered an invalid email address.';
} else {
$email = $em;
//Rest of script
}

If I'm doing something wrong, or If I'm doing something right.. let me know either way. Thanks!

-Eric

 

[user-7256]

Also, check the MX entries of the domain (use explode() to find the server) and if it is invalid, the server is down or the domain does not exist. www.php.net or google it.

 

[nasaboy007]

well i dont have a lot of experience with email validation, but after some research, i dont think you need the first definition of $em. instead of $em=eregi. here's what i think it shud be:

<?

$em = "[email protected]";
$ereg=eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\.[A-Z]{2,6}$", $em);
if (!$ereg) {
   echo($email . "is not a valid email!");
}
else{
$email=$em;}
?>

correct me if im wrong, uber php guys (or gals)

 

[Eric]

Thanks compu I'll look into that, and thanks nasaboy, I got my way working though.

-Eric

 

[unclekyky]

this is really simple, but you would probably want to expand on it:

<?php
$email = '[email protected]';
if (preg_match("/(.+)\@(.+)\.(.+){2,4}$/", $email))
{
	echo "match";
}
else 
{
	echo "no match";
}
?>

also, i would recommend using any of the ereg functions because they are not binary safe.