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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 |
|---|---|
| 2467 | * Add hidden input fields to the meta box save form. |
| 2468 | * |
| 2469 | * Hook into this action to print `<input type="hidden" ... />` fields, which will be POSTed back to |
| 2470 | * the server when meta boxes are saved. |
| 2471 | * |
| 2472 | * @since 5.0.0 |
| 2473 | * |
| 2474 | * @param WP_Post $post The post that is being edited. |
| 2475 | */ |
| 2476 | do_action( 'block_editor_meta_box_hidden_fields', $post ); |
| 2477 | } |
| 2478 | |