post meta updated

/**
 * This function prints post meta data.
 *
 * Ulrich Pogson Contribution
 *
 */
if (!function_exists('responsive_post_meta_data')) :

function responsive_post_meta_data() {
    $time_string = ( get_the_time( 'U' ) == get_the_modified_time( 'U' ) )
    ? '<span class="timestamp updated" datetime="%3$s">%4$s</span>'
    : '<span class="timestamp updated" datetime="%5$s">%6$s</span>';

    printf( __( '<span class="%1$s">Posted on </span>%2$s<span class="%3$s"> by </span>%4$s', 'responsive' ),
    'meta-prep meta-prep-author posted',
    sprintf( '<a href="%1$s" title="%2$s" rel="bookmark">' . $time_string . '</a>',
        esc_url( get_permalink() ),
        esc_attr( get_the_time() ),
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html( get_the_modified_date() )
    ),
    'byline',
    sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s">%3$s</a></span>',
        get_author_posts_url( get_the_author_meta( 'ID' ) ),
        sprintf( esc_attr__( 'View all posts by %s', 'responsive' ), get_the_author() ),
        esc_attr( get_the_author() )
        )
    );
}
endif;