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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 |
|---|---|
| 1937 | } |
| 1938 | |
| 1939 | /** |
| 1940 | * Fires immediately before a term taxonomy ID is deleted. |
| 1941 | * |
| 1942 | * @since 2.9.0 |
| 1943 | * |
| 1944 | * @param int $tt_id Term taxonomy ID. |
| 1945 | */ |
| 1946 | do_action( 'delete_term_taxonomy', $tt_id ); |
| 1947 | |
| 1948 | $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); |
| 1949 | |
| 1950 | /** |
| 1951 | * Fires immediately after a term taxonomy ID is deleted. |
| 1952 | * |
| 1953 | * @since 2.9.0 |
| 1954 | * |
| 1955 | * @param int $tt_id Term taxonomy ID. |