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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 |
|---|---|
| 1335 | |
| 1336 | /** |
| 1337 | * Filters the comments count for a given post or the whole site. |
| 1338 | * |
| 1339 | * @since 2.7.0 |
| 1340 | * |
| 1341 | * @param array|stdClass $count An empty array or an object containing comment counts. |
| 1342 | * @param int $post_id The post ID. Can be 0 to represent the whole site. |
| 1343 | */ |
| 1344 | $filtered = apply_filters( 'wp_count_comments', array(), $post_id ); |
| 1345 | if ( ! empty( $filtered ) ) { |
| 1346 | return $filtered; |
| 1347 | } |
| 1348 | |
| 1349 | $count = wp_cache_get( "comments-{$post_id}", 'counts' ); |
| 1350 | if ( false !== $count ) { |
| 1351 | return $count; |
| 1352 | } |
| 1353 | |