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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 |
|---|---|
| 513 | /** |
| 514 | * Filters the terms to exclude from the terms query. |
| 515 | * |
| 516 | * @since 2.3.0 |
| 517 | * |
| 518 | * @param string $exclusions `NOT IN` clause of the terms query. |
| 519 | * @param array $args An array of terms query arguments. |
| 520 | * @param string[] $taxonomies An array of taxonomy names. |
| 521 | */ |
| 522 | $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies ); |
| 523 | |
| 524 | if ( ! empty( $exclusions ) ) { |
| 525 | // Must do string manipulation here for backward compatibility with filter. |
| 526 | $this->sql_clauses['where']['exclusions'] = preg_replace( '/^\s*AND\s*/', '', $exclusions ); |
| 527 | } |
| 528 | |
| 529 | if ( |
| 530 | ( ! empty( $args['name'] ) ) || |
| 531 | ( is_string( $args['name'] ) && 0 !== strlen( $args['name'] ) ) |