Used By
| Used By | Description |
|---|---|
| wp-admin/includes/template.php: meta_form() | Prints the form in the Custom Fields meta box. |
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.
(array|null) Pre-defined meta keys to be used in place of a postmeta query. Default null.
(WP_Post) The current post object.
| Version | Description |
|---|---|
| 4.4.0 | Introduced. |
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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/postmeta_form_keys