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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 |
|---|---|
| 1820 | * Possible hook names include: |
| 1821 | * |
| 1822 | * - `get_next_post_excluded_terms` |
| 1823 | * - `get_previous_post_excluded_terms` |
| 1824 | * |
| 1825 | * @since 4.4.0 |
| 1826 | * |
| 1827 | * @param array|string $excluded_terms Array of excluded term IDs. Empty string if none were provided. |
| 1828 | */ |
| 1829 | $excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms ); |
| 1830 | |
| 1831 | if ( $in_same_term || ! empty( $excluded_terms ) ) { |
| 1832 | if ( $in_same_term ) { |
| 1833 | $join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id"; |
| 1834 | $where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy ); |
| 1835 | |
| 1836 | if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) { |
| 1837 | return ''; |
| 1838 | } |