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postmeta_form_keys – Hook | Developer.WordPress.org
apply_filters( ‘postmeta_form_keys’, array|null $keys, WP_Post $post )
Filters values for the meta key dropdown in the Custom Fields meta box.
Returning a non-null value will effectively short-circuit and avoid a potentially expensive query against postmeta.
$keysarray|nullPre-defined meta keys to be used in place of a postmeta query. Default null.
$postWP_PostThe current post object.
| Version | Description |
|---|
| 4.4.0 | Introduced. |
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