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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 |
|---|---|
| 2688 | |
| 2689 | /** |
| 2690 | * Filters the GROUP BY clause of the comments feed query before sending. |
| 2691 | * |
| 2692 | * @since 2.2.0 |
| 2693 | * |
| 2694 | * @param string $cgroupby The GROUP BY clause of the query. |
| 2695 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2696 | */ |
| 2697 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) ); |
| 2698 | |
| 2699 | /** |
| 2700 | * Filters the ORDER BY clause of the comments feed query before sending. |
| 2701 | * |
| 2702 | * @since 2.8.0 |
| 2703 | * |
| 2704 | * @param string $corderby The ORDER BY clause of the query. |
| 2705 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2706 | */ |
| Line | Code |
| 3161 | |
| 3162 | if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) { |
| 3163 | /** This filter is documented in wp-includes/query.php */ |
| 3164 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 3165 | |
| 3166 | /** This filter is documented in wp-includes/query.php */ |
| 3167 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 3168 | |
| 3169 | /** This filter is documented in wp-includes/query.php */ |
| 3170 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
| 3171 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
| 3172 | |
| 3173 | /** This filter is documented in wp-includes/query.php */ |
| 3174 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
| 3175 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
| 3176 | |
| 3177 | /** This filter is documented in wp-includes/query.php */ |
| 3178 | $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) ); |
| 3179 | |