get_meta_keys()
Get a list of previously defined keys.
Return
(mixed)
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;
}
Changelog
| Version | Description |
|---|---|
| WP-1.2.0 | Introduced. |