How to encrypt first 3 letters in php?

Question

PHP

Good day.
I have this code:

echo json_encode("Почта вашего запрашиваемого аккаунта: ".$_SESSION['email_fetch'].". Отправить код восстанновления на почту?");

Here, I need to encrypt this " ". It is desirable to mark in the middle with asterisks, like this: "tee***[email protected]" $_SESSION['email_fetch']

Answer 1

function hideEmail(string $email, int $length = 3, string $symbol = '*'): string
{
    $emailData = explode('@', $email);
    $username  = str_split($emailData[0], $length);
    $middle    = floor(count($username) / 2);

    $username[$middle] = str_repeat($symbol, $length);

    return implode('', $username) . '@' . $emailData[1];
}