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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 |
---|---|
2619 | * |
2620 | * The submit field includes the submit button, hidden fields for the |
2621 | * comment form, and any wrapper markup. |
2622 | * |
2623 | * @since 4.2.0 |
2624 | * |
2625 | * @param string $submit_field HTML markup for the submit field. |
2626 | * @param array $args Arguments passed to comment_form(). |
2627 | */ |
2628 | echo apply_filters( 'comment_form_submit_field', $submit_field, $args ); |
2629 |
|
2630 | /** |
2631 | * Fires at the bottom of the comment form, inside the closing </form> tag. |
2632 | * |
2633 | * @since 1.5.0 |
2634 | * |
2635 | * @param int $post_id The post ID. |
2636 | */ |
2637 | do_action( 'comment_form', $post_id ); |