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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.
| Line | Code |
|---|---|
| 3476 | if ( ! $q['suppress_filters'] ) { |
| 3477 | /** |
| 3478 | * Filter the raw post results array, prior to status checks. |
| 3479 | * |
| 3480 | * @since 2.3.0 |
| 3481 | * |
| 3482 | * @param array $posts The post results array. |
| 3483 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
| 3484 | */ |
| 3485 | $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) ); |
| 3486 | } |
| 3487 | |
| 3488 | if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) { |
| 3489 | /** This filter is documented in wp-includes/query.php */ |
| 3490 | $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) ); |
| 3491 | |
| 3492 | /** This filter is documented in wp-includes/query.php */ |
| 3493 | $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) ); |
| 3494 | |