Question

Here’s the code I’m using:

if (filter_var($desired_username, FILTER_VALIDATE_EMAIL) || ((strlen($desired_username)) > 32)) {
    $usernamevalidate=FALSE;
} else {
    $usernamevalidate=TRUE;
}

strlen is working perfectly, but either filter_var or FILTER_VALIDATE_EMAIL is not. Don’t let the variable name trick you, “$desired_username” links to a field for an email, but it’s just not working.

I can enter “test” instead of “[e-mail]” or even “test@test” and it still validates. I’ve also tried preg_match and other methods, but none of them are validating properly.

Any help would be appreciated.

Answer 1

Several things:

• You seem to be mixing up username and e-mail. Many e-mails are longer than 32 characters.
• You’ve got how filter_var works backwards. A valid e-mail is going to set $usernamevalidate=FALSE with your code.

You should be doing this instead:

if(filter_var($desired_username, FILTER_VALIDATE_EMAIL)) {
  $usernamevalidate=TRUE;
} else {
  $usernamevalidate=FALSE;
}