PHP Email Protector

protectemail.php

function protectEmail($email) {
    $suffix = substr($email, strpos($email, "@") + 1);
    $email = str_replace($suffix, "", $email);
    $email = str_replace("@", "", $email);
    if (strlen($email) > 3) {
        $f3c = mb_substr($email, 0, 3);
        $rlength = (strlen($email) - 3);
        $email = $f3c . str_repeat("*", $rlength);
        return $email . "@" . $suffix;
    } else {
        return $email;
    }
}