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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 |
|---|---|
| 1659 | |
| 1660 | /** |
| 1661 | * Filter the comments count for a given post. |
| 1662 | * |
| 1663 | * @since 2.7.0 |
| 1664 | * |
| 1665 | * @param array $count An empty array. |
| 1666 | * @param int $post_id The post ID. |
| 1667 | */ |
| 1668 | $stats = apply_filters( 'wp_count_comments', array(), $post_id ); |
| 1669 | if ( !empty($stats) ) |
| 1670 | return $stats; |
| 1671 | |
| 1672 | $count = wp_cache_get("comments-{$post_id}", 'counts'); |
| 1673 | |
| 1674 | if ( false !== $count ) |
| 1675 | return $count; |
| 1676 | |
| 1677 | $where = ''; |