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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 |
|---|---|
| 1175 | |
| 1176 | /** |
| 1177 | * Filter the comments count for a given post. |
| 1178 | * |
| 1179 | * @since 2.7.0 |
| 1180 | * |
| 1181 | * @param array $count An empty array. |
| 1182 | * @param int $post_id The post ID. |
| 1183 | */ |
| 1184 | $stats = apply_filters( 'wp_count_comments', array(), $post_id ); |
| 1185 | if ( !empty($stats) ) |
| 1186 | return $stats; |
| 1187 | |
| 1188 | $count = wp_cache_get("comments-{$post_id}", 'counts'); |
| 1189 | |
| 1190 | if ( false !== $count ) |
| 1191 | return $count; |
| 1192 | |
| 1193 | $where = ''; |