get_meta_keys() WordPress Function
The get_meta_keys() function is used to retrieve all the available metadata keys for a given post type. It returns an array of metadata keys, or an empty array if no metadata keys are available.
get_meta_keys() #
Returns a list of previously defined keys.
Return
(string[]) Array of meta key names.
Source
File: wp-admin/includes/post.php
function get_meta_keys() {
global $wpdb;
$keys = $wpdb->get_col(
"
SELECT meta_key
FROM $wpdb->postmeta
GROUP BY meta_key
ORDER BY meta_key"
);
return $keys;
}
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Changelog
| Version | Description |
|---|---|
| 1.2.0 | Introduced. |