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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 |
|---|---|
| 2054 | |
| 2055 | /** |
| 2056 | * Fires when deleting a term, before any modifications are made to posts or terms. |
| 2057 | * |
| 2058 | * @since 4.1.0 |
| 2059 | * |
| 2060 | * @param int $term Term ID. |
| 2061 | * @param string $taxonomy Taxonomy name. |
| 2062 | */ |
| 2063 | do_action( 'pre_delete_term', $term, $taxonomy ); |
| 2064 | |
| 2065 | // Update children to point to new parent. |
| 2066 | if ( is_taxonomy_hierarchical( $taxonomy ) ) { |
| 2067 | $term_obj = get_term( $term, $taxonomy ); |
| 2068 | if ( is_wp_error( $term_obj ) ) { |
| 2069 | return $term_obj; |
| 2070 | } |
| 2071 | $parent = $term_obj->parent; |
| 2072 | |