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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 |
---|---|
2415 | * |
2416 | * The submit field includes the submit button, hidden fields for the |
2417 | * comment form, and any wrapper markup. |
2418 | * |
2419 | * @since 4.2.0 |
2420 | * |
2421 | * @param string $submit_field HTML markup for the submit field. |
2422 | * @param array $args Arguments passed to comment_form(). |
2423 | */ |
2424 | echo apply_filters( 'comment_form_submit_field', $submit_field, $args ); |
2425 |
|
2426 | /** |
2427 | * Fires at the bottom of the comment form, inside the closing </form> tag. |
2428 | * |
2429 | * @since 1.5.0 |
2430 | * |
2431 | * @param int $post_id The post ID. |
2432 | */ |
2433 | do_action( 'comment_form', $post_id ); |