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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 |
|---|---|
| 2537 | echo apply_filters( 'comment_form_submit_field', $submit_field, $args ); |
| 2538 | |
| 2539 | /** |
| 2540 | * Fires at the bottom of the comment form, inside the closing </form> tag. |
| 2541 | * |
| 2542 | * @since 1.5.0 |
| 2543 | * |
| 2544 | * @param int $post_id The post ID. |
| 2545 | */ |
| 2546 | do_action( 'comment_form', $post_id ); |
| 2547 | ?> |
| 2548 | </form> |
| 2549 | <?php endif; ?> |
| 2550 | </div><!-- #respond --> |
| 2551 | <?php |
| 2552 | |
| 2553 | /** |
| 2554 | * Fires after the comment form. |
| 2555 | * |