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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 |
|---|---|
| 1855 | |
| 1856 | /** |
| 1857 | * Fires when deleting a term, before any modifications are made to posts or terms. |
| 1858 | * |
| 1859 | * @since 4.1.0 |
| 1860 | * |
| 1861 | * @param int $term Term ID. |
| 1862 | * @param string $taxonomy Taxonomy Name. |
| 1863 | */ |
| 1864 | do_action( 'pre_delete_term', $term, $taxonomy ); |
| 1865 | |
| 1866 | // Update children to point to new parent. |
| 1867 | if ( is_taxonomy_hierarchical( $taxonomy ) ) { |
| 1868 | $term_obj = get_term( $term, $taxonomy ); |
| 1869 | if ( is_wp_error( $term_obj ) ) { |
| 1870 | return $term_obj; |
| 1871 | } |
| 1872 | $parent = $term_obj->parent; |
| 1873 | |