php ping 检测电脑在线,PHP模拟PiNG命令

一直需要用PHP进行ping来检查主机的运行状态，没有实现。(需要主机有某些特定功能模块开启才可以。)

后来发现有大神使用模拟的方式来实现检查，代码不错，主机通用。就拿来简单改了改。

这个代码就是php访问主机的web服务，根据响应模拟ping服务。

error_reporting(E_ERROR);

header("content-Type: text/html; charset=utf-8");

set_time_limit(600);

function microtime_float()

{

list($usec, $sec) = explode(" ", microtime());

return ((float)$usec + (float)$sec);

}

function ping($host,$port)

{

$time_start = microtime_float();

$ip = gethostbyname($host);

$fp = @fsockopen($host,$port,&$errno,&$errstr,1);

if(!$fp) return 'IP: '.$ip.' timed out.

';

$get = "GET / HTTP/1.1\r\nHost:".$host."\r\nConnection: Close\r\n\r\n";

@fputs($fp,$get);

@fclose($fp);

$time_end = microtime_float();

$time = $time_end - $time_start;

$time = ceil($time * 1000);

return 'IP: '.$ip.' time='.$time.'ms

';

}

function check($hostname,$hostIP,$hostport='80')

{

echo $hostname.' ';

echo ping($hostIP,$hostport);

}

$t=time();

echo date("Y-m-d H:i:s",$t);

check('服务器','192.168.1.10');

check('虚拟机','192.168.9.10');

check('总变录像机','192.168.168.11');

check('2线录像机','192.168.168.12');

check('3线录像机','192.168.168.13');

check('4线录像机','192.168.168.14');

check('实验线录像机','192.168.168.15');

for($i = 16;$i < 195;$i++)

{

$p='192.168.168.'.$i ;

check(' ',$p);

}

$t=time();

echo date("Y-m-d H:i:s",$t);

?>