How to Partially hide email address in PHP?

In this tutorial, We will learn how to partially hide email addresses using PHP. For example: rat******@g***.com.

Example:

<?php
  
function hideEmailAddress($email)
{
    if(filter_var($email, FILTER_VALIDATE_EMAIL))
    {
        list($first, $last) = explode('@', $email);
        $first = str_replace(substr($first, '3'), str_repeat('*', strlen($first)-3), $first);
        $last = explode('.', $last);
        $last_domain = str_replace(substr($last['0'], '1'), str_repeat('*', strlen($last['0'])-1), $last['0']);
        $hideEmailAddress = $first.'@'.$last_domain.'.'.$last['1'];
        return $hideEmailAddress;
    }
}
   
$email = "gajanand.kgn@gmail.com";
   
echo hideEmailAddress($email);
?>

Output:

Thanks, I hope it will help you....