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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 |
|---|---|
| 2779 | |
| 2780 | /** |
| 2781 | * Filters the GROUP BY clause of the comments feed query before sending. |
| 2782 | * |
| 2783 | * @since 2.2.0 |
| 2784 | * |
| 2785 | * @param string $cgroupby The GROUP BY clause of the query. |
| 2786 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2787 | */ |
| 2788 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) ); |
| 2789 | |
| 2790 | /** |
| 2791 | * Filters the ORDER BY clause of the comments feed query before sending. |
| 2792 | * |
| 2793 | * @since 2.8.0 |
| 2794 | * |
| 2795 | * @param string $corderby The ORDER BY clause of the query. |
| 2796 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 2797 | */ |
| Line | Code |
| 3375 | |
| 3376 | if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) { |
| 3377 | /** This filter is documented in wp-includes/query.php */ |
| 3378 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 3379 | |
| 3380 | /** This filter is documented in wp-includes/query.php */ |
| 3381 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 3382 | |
| 3383 | /** This filter is documented in wp-includes/query.php */ |
| 3384 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
| 3385 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
| 3386 | |
| 3387 | /** This filter is documented in wp-includes/query.php */ |
| 3388 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
| 3389 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
| 3390 | |
| 3391 | /** This filter is documented in wp-includes/query.php */ |
| 3392 | $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) ); |
| 3393 | |