• Increased performance; most requests are 2-10x faster than Net_DNS
• Near drop-in replacement for Net_DNS
• Uses PHP5 style classes and exceptions
• Support for IPv4 and IPv6, TCP and UDP sockets.
• Includes a separate, more intuitive "Updater" class for handling dynamic update
• Support zone signing using TSIG and SIG(0) for updates and zone transfers
• Includes a local cache using shared memory or flat file to improve performance
• includes many more RR's, including DNSSEC RR's.

You can download it directly from PEAR: https://pear.php.net/package/Net_DNS2

pear install Net_DNS2

Or you can require it directly via Composer: https://packagist.org/packages/pear/net_dns2

composer require pear/net_dns2

Or download the source above.

• PHP 5.1.2+
• The PHP INI setting mbstring.func_overload equals 0, 1, 4, or 5.

See the Net_DNS2 Website for more details - https://netdns2.com/