Login Restrict

// Restrict login to only the senior developer by user ID

function restrict_login_to_senior_dev( $user, $username, $password ) {

    // Allow login only for the specified user ID

    $allowed_user_id = 1; // Replace with your user ID (e.g., 1, 2, etc.)

    if ( $username && $user instanceof WP_User && $user->ID !== $allowed_user_id ) {

        return new WP_Error( 'login_restricted', 'Access denied: Only the senior developer can log in.' );

    }

    return $user;

}

add_filter( 'authenticate', 'restrict_login_to_senior_dev', 100, 3 );