swoole_async_dns_lookup

(PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0)

swoole_async_dns_lookup — Async and non-blocking hostname to IP lookup

bool swoole_async_dns_lookup ( string $hostname , callable $callback )

hostname

The host name.

callback

mixed callback ( string $hostname , string $ip )

成功时返回 TRUE，或者在失败时返回 FALSE。