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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 |
|---|---|
| 4800 | */ |
| 4801 | function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) { |
| 4802 | $object_id = (int) $object_id; |
| 4803 | |
| 4804 | $ancestors = array(); |
| 4805 | |
| 4806 | if ( empty( $object_id ) ) { |
| 4807 | |
| 4808 | /** This filter is documented in wp-includes/taxonomy.php */ |
| 4809 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4810 | } |
| 4811 | |
| 4812 | if ( ! $resource_type ) { |
| 4813 | if ( is_taxonomy_hierarchical( $object_type ) ) { |
| 4814 | $resource_type = 'taxonomy'; |
| 4815 | } elseif ( post_type_exists( $object_type ) ) { |
| 4816 | $resource_type = 'post_type'; |
| 4817 | } |
| 4818 | } |
| Line | Code |
| 4832 | * |
| 4833 | * @since 3.1.0 |
| 4834 | * @since 4.1.1 Introduced the `$resource_type` parameter. |
| 4835 | * |
| 4836 | * @param array $ancestors An array of object ancestors. |
| 4837 | * @param int $object_id Object ID. |
| 4838 | * @param string $object_type Type of object. |
| 4839 | * @param string $resource_type Type of resource $object_type is. |
| 4840 | */ |
| 4841 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4842 | } |
| 4843 | |
| 4844 | /** |
| 4845 | * Returns the term's parent's term_ID. |
| 4846 | * |
| 4847 | * @since 3.1.0 |
| 4848 | * |
| 4849 | * @param int $term_id Term ID. |
| 4850 | * @param string $taxonomy Taxonomy name. |