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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 |
|---|---|
| 1410 | /** |
| 1411 | * Filter the terms to exclude from the terms query. |
| 1412 | * |
| 1413 | * @since 2.3.0 |
| 1414 | * |
| 1415 | * @param string $exclusions `NOT IN` clause of the terms query. |
| 1416 | * @param array $args An array of terms query arguments. |
| 1417 | * @param array $taxonomies An array of taxonomies. |
| 1418 | */ |
| 1419 | $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies ); |
| 1420 | |
| 1421 | if ( ! empty( $exclusions ) ) { |
| 1422 | // Must do string manipulation here for backward compatibility with filter. |
| 1423 | $where_conditions[] = preg_replace( '/^\s*AND\s*/', '', $exclusions ); |
| 1424 | } |
| 1425 | |
| 1426 | if ( ! empty( $args['name'] ) ) { |
| 1427 | $names = (array) $args['name']; |
| 1428 | foreach ( $names as &$_name ) { |