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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 3845 | */ |
| 3846 | function get_ancestors($object_id = 0, $object_type = '') { |
| 3847 | $object_id = (int) $object_id; |
| 3848 | |
| 3849 | $ancestors = array(); |
| 3850 | |
| 3851 | if ( empty( $object_id ) ) { |
| 3852 | |
| 3853 | /** This filter is documented in wp-includes/taxonomy.php */ |
| 3854 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type ); |
| 3855 | } |
| 3856 | |
| 3857 | if ( is_taxonomy_hierarchical( $object_type ) ) { |
| 3858 | $term = get_term($object_id, $object_type); |
| 3859 | while ( ! is_wp_error($term) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors ) ) { |
| 3860 | $ancestors[] = (int) $term->parent; |
| 3861 | $term = get_term($term->parent, $object_type); |
| 3862 | } |
| 3863 | } elseif ( post_type_exists( $object_type ) ) { |
| Line | Code |
| 3867 | /** |
| 3868 | * Filter a given object's ancestors. |
| 3869 | * |
| 3870 | * @since 3.1.0 |
| 3871 | * |
| 3872 | * @param array $ancestors An array of object ancestors. |
| 3873 | * @param int $object_id Object ID. |
| 3874 | * @param string $object_type Type of object. |
| 3875 | */ |
| 3876 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type ); |
| 3877 | } |
| 3878 | |
| 3879 | /** |
| 3880 | * Returns the term's parent's term_ID |
| 3881 | * |
| 3882 | * @since 3.1.0 |
| 3883 | * |
| 3884 | * @param int $term_id |
| 3885 | * @param string $taxonomy |