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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 |
|---|---|
| 2017 | $edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' ); |
| 2018 | |
| 2019 | /** |
| 2020 | * Fires immediately before a term to delete's children are reassigned a parent. |
| 2021 | * |
| 2022 | * @since 2.9.0 |
| 2023 | * |
| 2024 | * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. |
| 2025 | */ |
| 2026 | do_action( 'edit_term_taxonomies', $edit_tt_ids ); |
| 2027 | |
| 2028 | $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id ) + compact( 'taxonomy' ) ); |
| 2029 | |
| 2030 | // Clean the cache for all child terms. |
| 2031 | $edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' ); |
| 2032 | clean_term_cache( $edit_term_ids, $taxonomy ); |
| 2033 | |
| 2034 | /** |
| 2035 | * Fires immediately after a term to delete's children are reassigned a parent. |