2013-03-11 51 views
1

我在我的公司局域网(192.168.200.254)后面ping了几台计算机(192.168.200.1和192.168.200.2)。PHP Exec Ping目标主机无法访问

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,其中一台计算机没有通电(.1),仍然得到一个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), 

上平192.168.220.1尝试的var_dump($输出)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)," 
} 

所以我代替我试图寻找这是对假阳性“目标创造了$输出数组主机无法访问“的消息,但没有这条路线的运气。

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事。有任何想法吗?

+0

in_array将不起作用,因为它需要匹配元素的整个值。相反,我可能会做一些愚蠢的事情,比如将数组连接到单个字符串中,并将preg_match作为您正在查找的字符串。或者,如果您认为这是一个安全的假设,那么只需在数组的第三个元素上进行preg_match。 – mkaatman 2013-03-11 19:14:41

回答

1

你需要的是preg_grep。这给一试:

function pingAddress($TEST) { 
    $pingresult = exec("ping -n 1 $TEST && exit", $output, $result); 
    //echo $result. "<br/>"; 

    if (($result == 0)){ 
     if(count(preg_grep('/Destination host unreachable/i', $output)) == 0){ 
      echo "Ping successful! <br/>"; 
     else 
      echo "Ping unsuccessful! <br/>"; 
    } 
    elseif ($result == 1){ 
     echo "Ping unsuccessful! <br/>"; 
    }  

}

+0

工作很好,发现这一点。 – vashavoc 2013-03-11 19:43:50

0

in_array会想到整个字符串即“答复从192.168.200.254:目标主机不可达” 。您可以使用strstrphp manual strstr php函数或正则表达式检查代替。并且因为它在数组中 - 就像有人建议的那样..加入数组的字符串并尝试查找文本。