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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 |
---|---|
2749 | if ( ! $q['suppress_filters'] ) { |
2750 | /** |
2751 | * Filters the JOIN clause of the comments feed query before sending. |
2752 | * |
2753 | * @since 2.2.0 |
2754 | * |
2755 | * @param string $cjoin The JOIN clause of the query. |
2756 | * @param WP_Query $query The WP_Query instance (passed by reference). |
2757 | */ |
2758 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) ); |
2759 |
|
2760 | /** |
2761 | * Filters the WHERE clause of the comments feed query before sending. |
2762 | * |
2763 | * @since 2.2.0 |
2764 | * |
2765 | * @param string $cwhere The WHERE clause of the query. |
2766 | * @param WP_Query $query The WP_Query instance (passed by reference). |
2767 | */ |
Line | Code |
3339 | * |
3340 | * @param WP_Post[] $posts Array of post objects. |
3341 | * @param WP_Query $query The WP_Query instance (passed by reference). |
3342 | */ |
3343 | $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) ); |
3344 | } |
3345 |
|
3346 | if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) { |
3347 | /** This filter is documented in wp-includes/query.php */ |
3348 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
3349 |
|
3350 | /** This filter is documented in wp-includes/query.php */ |
3351 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
3352 |
|
3353 | /** This filter is documented in wp-includes/query.php */ |
3354 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
3355 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
3356 |
|
3357 | /** This filter is documented in wp-includes/query.php */ |