我在我的公司局域網(192.168.200.254)後面ping了幾臺計算機(192.168.200.1和192.168.200.2)。PHP Exec Ping目標主機無法訪問
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");
我的問題是,其中一臺計算機沒有通電(.1),仍然得到一個ping響應。
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),
上平192.168.220.1嘗試的var_dump($輸出)顯示爲:
array(6) {
[0]=> string(0) ""
[1]=> string(44) "Pinging 192.168.200.1 with 32 bytes of data:"
[2]=> string(57) "Reply from 192.168.200.254: Destination host unreachable."
[3]=> string(0) ""
[4]=> string(34) "Ping statistics for 192.168.200.1:"
[5]=> string(56) " Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),"
}
所以我代替我試圖尋找這是對假陽性「目標創造了$輸出數組主機無法訪問「的消息,但沒有這條路線的運氣。
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");
仍然顯示成功。我可能在這裏做錯了事。有任何想法嗎?
in_array將不起作用,因爲它需要匹配元素的整個值。相反,我可能會做一些愚蠢的事情,比如將數組連接到單個字符串中,並將preg_match作爲您正在查找的字符串。或者,如果您認爲這是一個安全的假設,那麼只需在數組的第三個元素上進行preg_match。 – mkaatman 2013-03-11 19:14:41