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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 |
|---|---|
| 4213 | */ |
| 4214 | function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) { |
| 4215 | $object_id = (int) $object_id; |
| 4216 | |
| 4217 | $ancestors = array(); |
| 4218 | |
| 4219 | if ( empty( $object_id ) ) { |
| 4220 | |
| 4221 | /** This filter is documented in wp-includes/taxonomy.php */ |
| 4222 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4223 | } |
| 4224 | |
| 4225 | if ( ! $resource_type ) { |
| 4226 | if ( is_taxonomy_hierarchical( $object_type ) ) { |
| 4227 | $resource_type = 'taxonomy'; |
| 4228 | } elseif ( post_type_exists( $object_type ) ) { |
| 4229 | $resource_type = 'post_type'; |
| 4230 | } |
| 4231 | } |
| Line | Code |
| 4245 | * |
| 4246 | * @since 3.1.0 |
| 4247 | * @since 4.1.1 Introduced the `$resource_type` parameter. |
| 4248 | * |
| 4249 | * @param array $ancestors An array of object ancestors. |
| 4250 | * @param int $object_id Object ID. |
| 4251 | * @param string $object_type Type of object. |
| 4252 | * @param string $resource_type Type of resource $object_type is. |
| 4253 | */ |
| 4254 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4255 | } |
| 4256 | |
| 4257 | /** |
| 4258 | * Returns the term's parent's term_ID. |
| 4259 | * |
| 4260 | * @since 3.1.0 |
| 4261 | * |
| 4262 | * @param int $term_id Term ID. |
| 4263 | * @param string $taxonomy Taxonomy name. |