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vendor/swoole/examples/async/dns_lookup.php

@@ -0,0 +1,17 @@
+<?php
+swoole_async_set(array(
+    //使用纯异步IO
+    'use_async_resolver' => true,
+    'disable_dns_cache' => true,
+    'dns_lookup_random' => true,
+    'dns_server' => '114.114.114.114',
+));
+swoole_async_dns_lookup("www.sina.com.cn", function ($host, $ip)
+{
+    echo "{$host} reslove to {$ip}\n";
+});
+
+swoole_async_dns_lookup("www.baidu.com", function ($host, $ip)
+{
+    echo "{$host} reslove to {$ip}\n";
+});