Saved,由于原有whoisAPI失效，改用WHOIS命令查询，速度更快，但是需要安装whois命令，RHEL下yum install whois即可

timeout.php

@@ -0,0 +1,29 @@
+<?php
+declare(ticks = 1);
+function a()
+{
+   
+}
+function b()
+{
+    echo "Stop\n";
+}
+function c()
+{
+    usleep(100000);
+}
+function sig()
+{
+    throw new Exception;
+}
+try
+{
+    pcntl_alarm(5);
+    pcntl_signal(SIGALRM, "sig");
+    a();
+    pcntl_alarm(0);
+}
+catch(Exception $e)
+{
+    echo "timeout\n";
+}