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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 |
|---|---|
| 1291 | |
| 1292 | /** |
| 1293 | * Filters the comments count for a given post. |
| 1294 | * |
| 1295 | * @since 2.7.0 |
| 1296 | * |
| 1297 | * @param array $count An empty array. |
| 1298 | * @param int $post_id The post ID. |
| 1299 | */ |
| 1300 | $filtered = apply_filters( 'wp_count_comments', array(), $post_id ); |
| 1301 | if ( ! empty( $filtered ) ) { |
| 1302 | return $filtered; |
| 1303 | } |
| 1304 | |
| 1305 | $count = wp_cache_get( "comments-{$post_id}", 'counts' ); |
| 1306 | if ( false !== $count ) { |
| 1307 | return $count; |
| 1308 | } |
| 1309 | |