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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 |
|---|---|
| 2437 | |
| 2438 | /** |
| 2439 | * Filters the GROUP BY clause of the comments feed query before sending. |
| 2440 | * |
| 2441 | * @since 2.2.0 |
| 2442 | * |
| 2443 | * @param string $cgroupby The GROUP BY clause of the query. |
| 2444 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2445 | */ |
| 2446 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) ); |
| 2447 | |
| 2448 | /** |
| 2449 | * Filters the ORDER BY clause of the comments feed query before sending. |
| 2450 | * |
| 2451 | * @since 2.8.0 |
| 2452 | * |
| 2453 | * @param string $corderby The ORDER BY clause of the query. |
| 2454 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2455 | */ |
| Line | Code |
| 2852 | |
| 2853 | if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) { |
| 2854 | /** This filter is documented in wp-includes/query.php */ |
| 2855 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 2856 | |
| 2857 | /** This filter is documented in wp-includes/query.php */ |
| 2858 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 2859 | |
| 2860 | /** This filter is documented in wp-includes/query.php */ |
| 2861 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
| 2862 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
| 2863 | |
| 2864 | /** This filter is documented in wp-includes/query.php */ |
| 2865 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
| 2866 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
| 2867 | |
| 2868 | /** This filter is documented in wp-includes/query.php */ |
| 2869 | $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option('posts_per_rss'), &$this ) ); |
| 2870 | |