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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 |
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1815 | $edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' ); |
1816 |
|
1817 | /** |
1818 | * Fires immediately before a term to delete's children are reassigned a parent. |
1819 | * |
1820 | * @since 2.9.0 |
1821 | * |
1822 | * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. |
1823 | */ |
1824 | do_action( 'edit_term_taxonomies', $edit_tt_ids ); |
1825 |
|
1826 | $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id ) + compact( 'taxonomy' ) ); |
1827 |
|
1828 | // Clean the cache for all child terms. |
1829 | $edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' ); |
1830 | clean_term_cache( $edit_term_ids, $taxonomy ); |
1831 |
|
1832 | /** |
1833 | * Fires immediately after a term to delete's children are reassigned a parent. |