WordPress at a glance
function is not described

get_post_taxonomies() WP 2.5.0

Retrieve all taxonomies of a post with just the names.

No Hooks.

Return

Array. An array of all taxonomy names for the given post.

Usage

get_post_taxonomies( $post );
$post(int/WP_Post)
Post ID or WP_Post object.
Default: global $post

Code of get post taxonomies: wp-includes/taxonomy.php VER 5.1.1

<?php
function get_post_taxonomies( $post = 0 ) {
	$post = get_post( $post );

	return get_object_taxonomies( $post );
}