WP Author Short Code

/* Start Get Author Link */
function my_authors_meta($atts){
    /* If the user passed an integer then good to go */
    if (is_numeric($atts[0])) {
        $authorid = $atts[0];
        echo '<a href="';
        echo get_bloginfo('url');
        echo '/author/';
        echo the_author_meta('user_nicename', $authorid );
        echo '/">';
        echo the_author_meta('display_name', $authorid );
        echo '</a>';
    }
}
add_shortcode('author', 'my_authors_meta');
add_filter('my_authors_meta', 'do_shortcode');
/* Start Get Author Link call [author id] */