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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 |
|---|---|
| 2366 | * Filters a term before it is sanitized and inserted into the database. |
| 2367 | * |
| 2368 | * @since 3.0.0 |
| 2369 | * @since 6.1.0 The `$args` parameter was added. |
| 2370 | * |
| 2371 | * @param string|WP_Error $term The term name to add, or a WP_Error object if there's an error. |
| 2372 | * @param string $taxonomy Taxonomy slug. |
| 2373 | * @param array|string $args Array or query string of arguments passed to wp_insert_term(). |
| 2374 | */ |
| 2375 | $term = apply_filters( 'pre_insert_term', $term, $taxonomy, $args ); |
| 2376 | |
| 2377 | if ( is_wp_error( $term ) ) { |
| 2378 | return $term; |
| 2379 | } |
| 2380 | |
| 2381 | if ( is_int( $term ) && 0 === $term ) { |
| 2382 | return new WP_Error( 'invalid_term_id', __( 'Invalid term ID.' ) ); |
| 2383 | } |
| 2384 | |