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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2618 | |
| 2619 | /** |
| 2620 | * Filters the GROUP BY clause of the comments feed query before sending. |
| 2621 | * |
| 2622 | * @since 2.2.0 |
| 2623 | * |
| 2624 | * @param string $cgroupby The GROUP BY clause of the query. |
| 2625 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2626 | */ |
| 2627 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) ); |
| 2628 | |
| 2629 | /** |
| 2630 | * Filters the ORDER BY clause of the comments feed query before sending. |
| 2631 | * |
| 2632 | * @since 2.8.0 |
| 2633 | * |
| 2634 | * @param string $corderby The ORDER BY clause of the query. |
| 2635 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2636 | */ |
| Line | Code |
| 3040 | |
| 3041 | if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) { |
| 3042 | /** This filter is documented in wp-includes/query.php */ |
| 3043 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 3044 | |
| 3045 | /** This filter is documented in wp-includes/query.php */ |
| 3046 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 3047 | |
| 3048 | /** This filter is documented in wp-includes/query.php */ |
| 3049 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
| 3050 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
| 3051 | |
| 3052 | /** This filter is documented in wp-includes/query.php */ |
| 3053 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
| 3054 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
| 3055 | |
| 3056 | /** This filter is documented in wp-includes/query.php */ |
| 3057 | $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) ); |
| 3058 | |