programmatically add a user role for today’s birthday in WooCommerce

// Function to check if today is user's birthday
function is_users_birthday($user_id) {
    $user_info = get_userdata($user_id);
    $user_birthday = strtotime($user_info->date_of_birth); // Adjust this to your user meta field
    $today = strtotime('today');

    return date('md', $user_birthday) == date('md', $today);
}

// Function to add role to user
function add_birthday_role_to_user($user_id) {
    $user = new WP_User($user_id);
    // Add the desired role here
    $user->add_role('birthday_role');
}

// Hook into WordPress init action to check birthdays and add role
add_action('init', 'check_birthday_and_add_role');

function check_birthday_and_add_role() {
    // Get users
    $users = get_users();
    foreach ($users as $user) {
        if (is_users_birthday($user->ID)) {
            add_birthday_role_to_user($user->ID);
        }
    }
}

programmatically add a user role for users with birthdays in the current month in WooCommerce

// Function to check if user's birthday is in the current month
function is_users_birthday_this_month($user_id) {
    $user_info = get_userdata($user_id);
    $user_birthday = strtotime($user_info->date_of_birth);  // Adjust this to your user meta field
    $current_month = date('m');
    $user_month = date('m', $user_birthday);

    return $user_month == $current_month;
}

// Function to add role to user
function add_birthday_role_to_user($user_id) {
    $user = new WP_User($user_id);
    // Add the desired role here
    $user->add_role('birthday_role');
}

// Hook into WordPress init action to check birthdays and add role
add_action('init', 'check_birthday_and_add_role');

function check_birthday_and_add_role() {
    // Get users
    $users = get_users();
    foreach ($users as $user) {
        if (is_users_birthday_this_month($user->ID)) {
            add_birthday_role_to_user($user->ID);
        }
    }
}