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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 |
---|---|
3235 |
|
3236 | /** |
3237 | * Filter the WHERE clause of the comments feed query before sending. |
3238 | * |
3239 | * @since 2.2.0 |
3240 | * |
3241 | * @param string $cwhere The WHERE clause of the query. |
3242 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3243 | */ |
3244 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( $cwhere, &$this ) ); |
3245 |
|
3246 | /** |
3247 | * Filter the GROUP BY clause of the comments feed query before sending. |
3248 | * |
3249 | * @since 2.2.0 |
3250 | * |
3251 | * @param string $cgroupby The GROUP BY clause of the query. |
3252 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3253 | */ |
Line | Code |
3629 | */ |
3630 | $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) ); |
3631 | } |
3632 |
|
3633 | if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) { |
3634 | /** This filter is documented in wp-includes/query.php */ |
3635 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
3636 |
|
3637 | /** This filter is documented in wp-includes/query.php */ |
3638 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
3639 |
|
3640 | /** This filter is documented in wp-includes/query.php */ |
3641 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
3642 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
3643 |
|
3644 | /** This filter is documented in wp-includes/query.php */ |
3645 | $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) ); |
3646 | $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : ''; |
3647 |
|