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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 |
|---|---|
| 1196 | |
| 1197 | /** |
| 1198 | * Filters whether the current post is open for comments. |
| 1199 | * |
| 1200 | * @since 2.5.0 |
| 1201 | * |
| 1202 | * @param bool $open Whether the current post is open for comments. |
| 1203 | * @param int $post_id The post ID. |
| 1204 | */ |
| 1205 | return apply_filters( 'comments_open', $open, $post_id ); |
| 1206 | } |
| 1207 | |
| 1208 | /** |
| 1209 | * Whether the current post is open for pings. |
| 1210 | * |
| 1211 | * @since 1.5.0 |
| 1212 | * |
| 1213 | * @param int|WP_Post $post_id Post ID or WP_Post object. Default current post. |
| 1214 | * @return bool True if pings are accepted |