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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 |
|---|---|
| 1401 | |
| 1402 | /** |
| 1403 | * Filters the comments count for a given post or the whole site. |
| 1404 | * |
| 1405 | * @since 2.7.0 |
| 1406 | * |
| 1407 | * @param array|stdClass $count An empty array or an object containing comment counts. |
| 1408 | * @param int $post_id The post ID. Can be 0 to represent the whole site. |
| 1409 | */ |
| 1410 | $filtered = apply_filters( 'wp_count_comments', array(), $post_id ); |
| 1411 | if ( ! empty( $filtered ) ) { |
| 1412 | return $filtered; |
| 1413 | } |
| 1414 | |
| 1415 | $count = wp_cache_get( "comments-{$post_id}", 'counts' ); |
| 1416 | if ( false !== $count ) { |
| 1417 | return $count; |
| 1418 | } |
| 1419 | |