Custom-Rdata-Handlers.md

Using Custom RData Handlers

Out-of-the-box, the library will handle most RData types that are regularly encountered. Occasionally, you may encounter an unsupported type. You can add your own RData handler method for the record type. For example, you may want to support the non-standard SPF record type, and return a TXT instance.

$spf = function (\ArrayIterator $iterator): Badcow\DNS\Rdata\TXT {
    $string = '';
    while ($iterator->valid()) {
        $string .= $iterator->current() . ' ';
        $iterator->next();
    }
    $string = trim($string, ' "'); //Remove whitespace and quotes

    $spf = new Badcow\DNS\Rdata\TXT;
    $spf->setText($string);

    return $spf;
};

$customHandlers = ['SPF' => $spf];

$record = 'example.com. 7200 IN SPF "v=spf1 a mx ip4:69.64.153.131 include:_spf.google.com ~all"';
$parser = new \Badcow\DNS\Parser\Parser($customHandlers);
$zone = $parser->makeZone('example.com.', $record);

You can also overwrite the default handlers if you wish, as long as your handler method returns an instance of Badcow\DNS\Rdata\RdataInterface.