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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 |
|---|---|
| 1783 | /** |
| 1784 | * Filter the terms to exclude from the terms query. |
| 1785 | * |
| 1786 | * @since 2.3.0 |
| 1787 | * |
| 1788 | * @param string $exclusions NOT IN clause of the terms query. |
| 1789 | * @param array $args An array of terms query arguments. |
| 1790 | * @param string|array $taxonomies A taxonomy or array of taxonomies. |
| 1791 | */ |
| 1792 | $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies ); |
| 1793 | |
| 1794 | if ( ! empty( $exclusions ) ) { |
| 1795 | $where .= $exclusions; |
| 1796 | } |
| 1797 | |
| 1798 | if ( ! empty( $args['slug'] ) ) { |
| 1799 | if ( is_array( $args['slug'] ) ) { |
| 1800 | $slug = array_map( 'sanitize_title', $args['slug'] ); |
| 1801 | $where .= " AND t.slug IN ('" . implode( "', '", $slug ) . "')"; |