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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 |
|---|---|
| 2508 | /** |
| 2509 | * Filters term data before it is inserted into the database. |
| 2510 | * |
| 2511 | * @since 4.7.0 |
| 2512 | * |
| 2513 | * @param array $data Term data to be inserted. |
| 2514 | * @param string $taxonomy Taxonomy slug. |
| 2515 | * @param array $args Arguments passed to wp_insert_term(). |
| 2516 | */ |
| 2517 | $data = apply_filters( 'wp_insert_term_data', $data, $taxonomy, $args ); |
| 2518 | |
| 2519 | if ( false === $wpdb->insert( $wpdb->terms, $data ) ) { |
| 2520 | return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database.' ), $wpdb->last_error ); |
| 2521 | } |
| 2522 | |
| 2523 | $term_id = (int) $wpdb->insert_id; |
| 2524 | |
| 2525 | // Seems unreachable. However, is used in the case that a term name is provided, which sanitizes to an empty string. |
| 2526 | if ( empty( $slug ) ) { |