Validating email addresses

PHP
1

I’m using the jquery.validate.pack.js plugin to validate my contact form. I want to block certain email address account such as Hotmail, Outlook and Live from being validated. How can I add this rule to the validation? I have this line of code which validates the email address


```php
if (!eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\\.[A-Z]{2,4}$", trim($_POST['email'])))



Can I simply add the email address I want to not allow into the expression and if so where? I realise that eregi is now depreciated and I will update it.
2

Hi freakystreak,

Are you saying you want Hotmail address to fail validation, or you want them to pass validation without using the regex?

3

I want any hotmail address to fail validation

4

OK, so assuming that your email validation code has to return true or false, you could do it like this:


$blacklist = array(
    'hotmail.com',
    'outlook.com'
    'live.com'
);

foreach ($blacklist as $domain) {
    if (strpos($email, $domain) >= 0) {
        return FALSE;
    }
}

return (bool) preg_match("/^[A-Z0-9._%-]+@[A-Z0-9._%-]+\\.[A-Z]{2,4}$/i", $email);

Basically you have a blacklist of the domains that you want to fail validation, and you loop through each one checking to see if it’s present in the email address string.

5

Thanks for that will give it a try. Is there a way to get custom error messages with the jquery.validate.pack.js so I can let the user know that I don’t accept Hotmail? Appreciate the help