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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 |
|---|---|
| 480 | $results = $wpdb->get_results( $query ); |
| 481 | /** |
| 482 | * Filter the comment query results. |
| 483 | * |
| 484 | * @since 3.1.0 |
| 485 | * |
| 486 | * @param array $results An array of comments. |
| 487 | * @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference. |
| 488 | */ |
| 489 | $comments = apply_filters_ref_array( 'the_comments', array( $results, &$this ) ); |
| 490 | |
| 491 | wp_cache_add( $cache_key, $comments, 'comment' ); |
| 492 | |
| 493 | return $comments; |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * Used internally to generate an SQL string for searching across multiple columns |
| 498 | * |