Php做的端口嗅探器--可以指定网站和端口

  //Php做的端口嗅探器--可以指定网站和端口
//并返回嗅探结果
    function http_request($server, $port) {
    $data = "";
    $query = "HEAD / HTTP/1.0";
    $fp = fsockopen($server, $port);
    if($fp) {
    fputs($fp, $query."rnn");
    while(!feof($fp)) {
    $data .= fread($fp, 1000);
    }
    fclose($fp);
    }
    return $data;
    }
    ?>
    
        if($action == "query") {
    $data = http_request($server, $port);
    echo "Connected To $server on port $port.

";
    echo "Output:

$data

";
    }
    ?>