get category list by post id wordpress code example
Example 1: wordpress get post category name
<?php
$categories = get_the_category();
if ( ! empty( $categories ) ) {
echo esc_html( $categories[0]->name ); // Show first item of category
}
?>
Example 2: wordpress get post by id
$post = get_post( 123 ); // Where 123 is the ID
$output = apply_filters( 'the_content', $post->post_content );