post_submitbox_start WordPress Action Hook
The post_submitbox_start hook is triggered before the Submit meta box is displayed on the post editing screen. This hook can be used to add additional content or fields to the Submit meta box.
do_action( 'post_submitbox_start', WP_Post|null $post ) #
Fires at the beginning of the publishing actions section of the Publish meta box.
Parameters
Source
Changelog
| Version | Description |
|---|---|
| 4.9.0 | Added the $post parameter. |
| 2.7.0 | Introduced. |