If Not Email Address

[computermax2328]

Hello All,

 

If I have a newsletter process script with name and email, is there a way to identify if the email is an email address? For example johndoe@gmail.com.

 

I kind of want to think of a way to identify if it is a real name as well. Maybe just ask for first and last name.

 

Thanks,

[Lukeidiot]

You will need to use Regex for email addresses.

 

http://www.regular-expressions.info/email.html

Edited November 5, 2012 by Lukeidiot

[trq]

You could use a regular expression to see if the string is in a valid email address format. It doesn't however guarantee it is an actual email address.

 

That is why sites use email verification. If you want force your users into supplying an email address that works, you need to verify it up front.

[computermax2328]

I looked up email validation and html5 has and input type for email. I think I am going to look into that before I look into regular expressions

[trq]

Client side validation always needs to be backed up by server side validation.

[computermax2328]

Right! And it email input isn't supported by all browsers. Back to square one

[Pikachu2000]

filter_var with FILTER_VALIDATE_EMAIL, and send a confirmation email that requires the user to perform a verification.

[slj90]

<?php
$email = $_POST['email'];
if(filter_var($email, FILTER_VALIDATE_EMAIL) === FALSE) $error = 'Please enter a valid email address';
?>

Edited November 5, 2012 by slj90

[computermax2328]

They have a PHP command for everything. I love PHP!

 

In the simplest form, something like this??

$email = $_GET['email'];
if(filter_var($email, FILTER_VALIDATE_EMAIL) === FALSE) {
echo "This is not a valid email";
}
else {
mail($email, "Please Validate");
}

 

I understand there are no headers or message.

Edited November 5, 2012 by computermax2328

[JeanPierre]

They have a PHP command for everything. I love PHP!

 

In the simplest form, something like this??

$email = $_GET['email'];
if(filter_var($email, FILTER_VALIDATE_EMAIL) === FALSE) {
echo "This is not a valid email";
}
else {
mail($email, "Please Validate");
}

 

I understand there are no headers or message.

The PHP function checks if the email address is correctly build up.

But it doesn't say anything if the domain name exists.

 

I wrote a small example, which after the PHP check also checks if the domain name exists:

 

http://www.wmappz.com/php/validate-email-address/

[Pikachu2000]

And checking if the domain exists doesn't do anything to tell you if it's a valid address either. That's why you send a validation email to the address the user provided.