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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.
| Line | Code |
|---|---|
| 2314 | $edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' ); |
| 2315 | |
| 2316 | /** |
| 2317 | * Fires immediately before a term to delete's children are reassigned a parent. |
| 2318 | * |
| 2319 | * @since 2.9.0 |
| 2320 | * |
| 2321 | * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. |
| 2322 | */ |
| 2323 | do_action( 'edit_term_taxonomies', $edit_tt_ids ); |
| 2324 | |
| 2325 | $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) ); |
| 2326 | |
| 2327 | // Clean the cache for all child terms. |
| 2328 | $edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' ); |
| 2329 | clean_term_cache( $edit_term_ids, $taxonomy ); |
| 2330 | |
| 2331 | /** |
| 2332 | * Fires immediately after a term to delete's children are reassigned a parent. |