我在路由器 (192.168.200.254) 后面的公司局域网上 ping 几台计算机 (192.168.200.1 和 192.168.200.2)。
function pingAddress($TEST) {
$pingresult = exec("ping -n 1 $TEST", $output, $result);
if ($result == 0) {
echo "Ping successful!";
} else {
echo "Ping unsuccessful!";
}
}
pingAddress("192.168.220.1");
pingAddress("192.168.220.2");
我的问题是其中一台计算机未开机( .1 ),但我仍然收到 ping 响应。
Pinging 192.168.200.1 with 32 bytes of data:
Reply from 192.168.200.254: Destination host unreachable.
Ping statistics for 192.168.200.1:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
192.168.220.1 ping 尝试上的 var_dump($output) 显示为:
array(6) {
[0]=> string(0) ""
[1]=> string(44) "Pinging 192.168.200.1 with 32 bytes of data:"
[2]=> string(57) "Reply from 192.168.200.254: Destination host unreachable."
[3]=> string(0) ""
[4]=> string(34) "Ping statistics for 192.168.200.1:"
[5]=> string(56) " Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),"
}
所以我改为尝试搜索为误报“目标主机无法访问”消息创建的 $output 数组,但这条路线没有运气。
function pingAddress($TEST) {
$findme ="Destination host unreachable";
$pingresult = exec("ping -n 1 $TEST && exit", $output, $result);
//echo $result. "<br/>";
if (($result == 0) AND (in_array($findme, $output))){
echo "Ping unsuccessful! <br/>";
}
elseif (($result == 0) AND (!in_array($findme, $output))){
echo "Ping successful! <br/>";
}
elseif ($result == 1){
echo "Ping unsuccessful! <br/>";
}
}
pingAddress("192.168.220.1");
pingAddress("192.168.220.2");
仍然显示成功。我可能在这里做错了什么。有任何想法吗?