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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 |
---|---|
2893 | if ( !$q['suppress_filters'] ) { |
2894 | /** |
2895 | * Filter the JOIN clause of the comments feed query before sending. |
2896 | * |
2897 | * @since 2.2.0 |
2898 | * |
2899 | * @param string $cjoin The JOIN clause of the query. |
2900 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
2901 | */ |
2902 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) ); |
2903 |
|
2904 | /** |
2905 | * Filter the WHERE clause of the comments feed query before sending. |
2906 | * |
2907 | * @since 2.2.0 |
2908 | * |
2909 | * @param string $cwhere The WHERE clause of the query. |
2910 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
2911 | */ |
Line | Code |
3277 | * |
3278 | * @param array $posts The post results array. |
3279 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3280 | */ |
3281 | $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) ); |
3282 | } |
3283 |
|
3284 | if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) { |
3285 | /** This filter is documented in wp-includes/query.php */ |
3286 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
3287 |
|
3288 | /** This filter is documented in wp-includes/query.php */ |
3289 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
3290 |
|
3291 | /** This filter is documented in wp-includes/query.php */ |
3292 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
3293 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
3294 |
|
3295 | /** This filter is documented in wp-includes/query.php */ |