(PECL getdns >= 0.10.0)
php_getdns_context_get_edns_version — Get the EDNS version number.
$context
, int &$value
)This function gets the EDNS version number. See » RFC 6891 for a description of this value and its function.
context
The previously created DNS context that is to be used with this request.
value
The current EDNS version number. Valid values range from 0 to 255 inclusive. The default value is 0 (zero). Note that this argument is passed by reference and any existing value will be overwritten.
This function returns an integer response code. GETDNS_RETURN_GOOD indicates successful completion.