<?php

while ( have_posts() ) : the_post();

$author_id=$post->post_author;

//Avatar image

echo get_avatar( 32 );

//Author “Nick Name”

echo the_author_meta( ‘user_nicename’ , $author_id );

echo get_userdata($author_id)->nickname;

//Author “Display Name”

echo the_author_meta( ‘display_name’ , $author_id );

//Author “E-Mail address”

echo the_author_meta( ‘user_email’, $author_id );

//Author user loin

echo get_userdata($author_id)->user_login;