The 'removednssec.php' example file uses getKeydata() (which doesn't work by the way) but the function is obsolete:
/**
* OBSOLETE, DO NOT USE THIS FUNCTION
* If you need DNSSEC KeyData or DSData, see the extension SecDNS-1.1
* ALL DNSSEC FUNCTION ARE IN THERE
* @return array|null
*/
The 'removednssec.php' example file uses
getKeydata()
(which doesn't work by the way) but the function is obsolete: