How to get post author name in WordPress? - php

Question

In WordPress I need to fetch name of author who created post using author_id.
How can I find author_name ?

Answer 1

You can use get_the_author_meta(), to get author data.
echo get_the_author_meta('display_name', $author_id);
Hope this helps!

Answer 2

This should work like charm
<?php echo get_the_author(); ?>
For more detailed information.
https://codex.wordpress.org/Function_Reference/get_the_author

Answer 3

Use below code in single.php or the relevant page you want author name
<?php get_the_author_meta( 'display_name', $author_id ); ?>

Answer 4

When used in the WordPress Custom REST API endpoint you can do it like this:
function customrestapiplugin_getpost( $slug ) {
$args = [
'name' => $slug['slug'],
'post_type' => 'post'
];
$post = get_posts($args);
$data[$i]['id'] = $post[0]->ID;
$data['title'] = $post[0]->post_title;
$data['content'] = $post[0]->post_content;
$data['excerpt'] = $post[0]->post_excerpt;
$data['slug'] = $post[0]->post_name;
$data['date'] = $post[0]->post_date;
$data['link'] = get_permalink($post[0]->ID);
$data['author'] = get_the_author_meta('display_name', $post[0]->post_author);
$data['featured_image']['thumbnail'] = get_the_post_thumbnail_url($post[0]->ID, 'thumbnail');
$data['featured_image']['medium'] = get_the_post_thumbnail_url($post[0]->ID, 'medium');
$data['featured_image']['large'] = get_the_post_thumbnail_url($post[0]->ID, 'large');
return $data;
}

Answer 5

Add This code in single-post.php
<?php echo get_the_author(); ?>
I hope this will work !!

Answer 6

For those who are looking for a seamless solution on how to get an author of a post in WordPress, this is another lightweight method.
global $wpdb;
$post_id = 12; // your post id
$post_author_id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT post_author FROM {$wpdb->posts} WHERE ID = %d ", $post_id ) );
$author = new WP_User( $post_author_id );
$display_name = $author->display_name;
$avartar = get_avatar( $post_author_id, 30 ); // get_avatar( userid, size )
$author_url = get_author_posts_url( $post_author_id );