Lấy tất cả danh mục theo post id của Custom Post Type

//Returns All Term Items for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'all' ) );
print_r( $term_list );
 
// Returns Array of Term Names for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'names' ) );
print_r( $term_list );
 
// Returns Array of Term ID's for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'ids' ) );
print_r( $term_list );