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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 |
---|---|
3073 | if ( !$q['suppress_filters'] ) { |
3074 | /** |
3075 | * Filter the JOIN clause of the comments feed query before sending. |
3076 | * |
3077 | * @since 2.2.0 |
3078 | * |
3079 | * @param string $cjoin The JOIN clause of the query. |
3080 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3081 | */ |
3082 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) ); |
3083 |
|
3084 | /** |
3085 | * Filter the WHERE clause of the comments feed query before sending. |
3086 | * |
3087 | * @since 2.2.0 |
3088 | * |
3089 | * @param string $cwhere The WHERE clause of the query. |
3090 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3091 | */ |
Line | Code |
3467 | * |
3468 | * @param array $posts The post results array. |
3469 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3470 | */ |
3471 | $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) ); |
3472 | } |
3473 |
|
3474 | if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) { |
3475 | /** This filter is documented in wp-includes/query.php */ |
3476 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
3477 |
|
3478 | /** This filter is documented in wp-includes/query.php */ |
3479 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
3480 |
|
3481 | /** This filter is documented in wp-includes/query.php */ |
3482 | $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) ); |
3483 | $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : ''; |
3484 |
|
3485 | /** This filter is documented in wp-includes/query.php */ |