Nocoo.Weblog

如题,那么个东西,可以一次性ping一堆网站,看看哪个挂掉了.方便系统管理员用的东西,不必被动地等用户来叫了才知道网站挂了.以前还写了个exe的,不过是会检查返回的页面是不是包含特定的关键字的,相比起来更有可信度,不然一个404的网站,ping返回还是正常的呢.

贴点关键代码:

$result = ping_site($_POST["site"]);
$ip = "N/A";
$ttl = "N/A";
$time = "N/A";

if($result != "Fail")
{
    $start = stripos($result, "from ") + 5;
    $length = stripos($result, ":") - stripos($result, "from ") - 5;
    $ip = substr($result, $start, $length);

    $start = stripos($result, "ttl=") + 4;
    $length = stripos($result, " time=") - stripos($result, "ttl=") - 4;
    $ttl = substr($result, $start, $length);

    $start = stripos($result, "time=") + 5;
    $length = stripos($result, " ms") - stripos($result, "time=") - 5;
    $time = substr($result, $start, $length)." ms";

    echo "<td class=\"success\">".$_POST["site"]."</td><td class=\"success\"><img src=\"images/success.png\" alt=\"Success\" /></td><td class=\"success\">$ip</td><td class=\"success\">$ttl</td><td class=\"success\">$time</td><td><a href=\"http://".$_POST["site"]."\">HTTP</a>,<a href=\"#\" title=\"$result\">Raw Data</a></td>";
}
else
{
    echo "<td class=\"fail\">".$_POST["site"]."</td><td class=\"fail\"><img src=\"images/fail.png\" alt=\"Fail\" /></td><td class=\"fail\">N/A</td><td class=\"fail\">N/A</td><td class=\"fail\">N/A</td><td><a href=\"http://".$_POST["site"]."\">HTTP</a>,<a href=\"#\" title=\"$result\">Raw Data</a></td>";
}

function ping_site($target)
{
    $command = "ping -c 1 $target";
    exec($command, $result);
    if($result[1] == "") { return "Fail"; }
    else { return $result[1]; }
}