Filters the postbox classes for a specific screen and box ID combo.
The dynamic portions of the hook name, $screen_id and $box_id, refer to the screen ID and meta box ID, respectively.
$classesstring[]
$classes = apply_filters( "postbox_classes_{$screen_id}_{$box_id}", $classes );
| Version | Description |
|---|---|
| 3.2.0 | Introduced. |
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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/postbox_classes_screen_id_box_id