Question

I have a register script and i want to validate that people have typed in their email correctly, but this doesnt seem to work? any ideass?

if ($_POST){
$email=stripslashes($_POST['email']);
$valid=eregi('^([0-9a-z]+[-._+&])*[0-9a-z]+@([-0-9a-z]+[.])+[a-z]{2,6}$',$email);
if (!$email && !$valid){
    $_SESSION['error'] = "I'm sorry but the email you specified is not valid.     Please enter a valid email";
    unset($email);
    header("Location: register.php");
    exit;

}
    }

Answer 1

The right way to validate email in PHP is using the filter_var() function with the constant FILTER_VALIDATE_EMAIL.

filter_var($email, FILTER_VALIDATE_EMAIL)

This will return true if the submitted email is well shaped, otherwise it will return false. You can read more about filters at the Filter Reference.