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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 |
|---|---|
| 324 | foreach ( $pieces as $piece ) |
| 325 | $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : ''; |
| 326 | |
| 327 | $query = "SELECT $fields FROM $wpdb->comments $join WHERE $where ORDER BY $orderby $order $limits"; |
| 328 | |
| 329 | if ( $count ) |
| 330 | return $wpdb->get_var( $query ); |
| 331 | |
| 332 | $comments = $wpdb->get_results( $query ); |
| 333 | $comments = apply_filters_ref_array( 'the_comments', array( $comments, &$this ) ); |
| 334 | |
| 335 | wp_cache_add( $cache_key, $comments, 'comment' ); |
| 336 | |
| 337 | return $comments; |
| 338 | } |
| 339 | |
| 340 | /* |
| 341 | * Used internally to generate an SQL string for searching across multiple columns |
| 342 | * |