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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 |
|---|---|
| 1908 | } else if ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) { |
| 1909 | $terms = array_merge($terms, $wpdb->get_col($query)); |
| 1910 | } else if ( 'tt_ids' == $fields ) { |
| 1911 | $terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order"); |
| 1912 | } |
| 1913 | |
| 1914 | if ( ! $terms ) |
| 1915 | $terms = array(); |
| 1916 | |
| 1917 | return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args); |
| 1918 | } |
| 1919 | |
| 1920 | /** |
| 1921 | * Adds a new term to the database. Optionally marks it as an alias of an existing term. |
| 1922 | * |
| 1923 | * Error handling is assigned for the nonexistence of the $taxonomy and $term |
| 1924 | * parameters before inserting. If both the term id and taxonomy exist |
| 1925 | * previously, then an array will be returned that contains the term id and the |
| 1926 | * contents of what is returned. The keys of the array are 'term_id' and |