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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 |
|---|---|
| 2784 | |
| 2785 | /** |
| 2786 | * Filters the GROUP BY clause of the comments feed query before sending. |
| 2787 | * |
| 2788 | * @since 2.2.0 |
| 2789 | * |
| 2790 | * @param string $cgroupby The GROUP BY clause of the query. |
| 2791 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2792 | */ |
| 2793 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) ); |
| 2794 | |
| 2795 | /** |
| 2796 | * Filters the ORDER BY clause of the comments feed query before sending. |
| 2797 | * |
| 2798 | * @since 2.8.0 |
| 2799 | * |
| 2800 | * @param string $corderby The ORDER BY clause of the query. |
| 2801 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2802 | */ |
| Line | Code |
| 3403 | |
| 3404 | if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) { |
| 3405 | /** This filter is documented in wp-includes/query.php */ |
| 3406 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 3407 | |
| 3408 | /** This filter is documented in wp-includes/query.php */ |
| 3409 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 3410 | |
| 3411 | /** This filter is documented in wp-includes/query.php */ |
| 3412 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
| 3413 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
| 3414 | |
| 3415 | /** This filter is documented in wp-includes/query.php */ |
| 3416 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
| 3417 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
| 3418 | |
| 3419 | /** This filter is documented in wp-includes/query.php */ |
| 3420 | $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) ); |
| 3421 | |