/**
* Singleton
*
* @return object
*/
public function get_instance()
{
if (!self::$_instance instanceof cf_revisions) {
self::$_instance = new cf_revisions();
}
return self::$_instance;
}
static function register_meta()
{
if (function_exists('cfr_register_metadata')) {
cfr_register_metadata('foo');
global $CFR_KEYS_REQUIRED;
$cfr = cf_revisions::get_instance();
$CFR_KEYS_REQUIRED = $cfr->registered_keys();
$keys = cf_revisions_admin::selected_keys();
if (count($keys)) {
foreach ($keys as $key) {
cfr_register_metadata($key);
}
}
}
}