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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 |
|---|---|
| 2534 | * @since 2.3.0 |
| 2535 | * |
| 2536 | * @param int $post_id Post ID. |
| 2537 | * @param int $new The new comment count. |
| 2538 | * @param int $old The old comment count. |
| 2539 | */ |
| 2540 | do_action( 'wp_update_comment_count', $post_id, $new, $old ); |
| 2541 | |
| 2542 | /** This action is documented in wp-includes/post.php */ |
| 2543 | do_action( "edit_post_{$post->post_type}", $post_id, $post ); |
| 2544 | |
| 2545 | /** This action is documented in wp-includes/post.php */ |
| 2546 | do_action( 'edit_post', $post_id, $post ); |
| 2547 | |
| 2548 | return true; |
| 2549 | } |
| 2550 | |
| 2551 | // |
| 2552 | // Ping and trackback functions. |