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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 |
---|---|
370 | $groupby = "{$wpdb->comments}.comment_ID"; |
371 | } |
372 |
|
373 | if ( ! empty( $date_query ) && is_array( $date_query ) ) { |
374 | $date_query_object = new WP_Date_Query( $date_query, 'comment_date' ); |
375 | $where .= $date_query_object->get_sql(); |
376 | } |
377 |
|
378 | $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits', 'groupby' ); |
379 | $clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) ); |
380 | foreach ( $pieces as $piece ) |
381 | $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : ''; |
382 |
|
383 | if ( $groupby ) |
384 | $groupby = 'GROUP BY ' . $groupby; |
385 |
|
386 | $query = "SELECT $fields FROM $wpdb->comments $join WHERE $where $groupby ORDER BY $orderby $order $limits"; |
387 |
|
388 | if ( $count ) |