php把IP地址转换成广播地址的例子

//ip地址转换广播地址
private function ip2broadcast($ip,$mask){
 $ipSplit = explode('.',$ip);
 $maskSplit = explode('.',$mask);
 $broadcast = null;
 for ($i=0; $i < 4; $i++) {
  $ipBin = sprintf("%b",$ipSplit[$i]);
  while((8-strlen($ipBin))>0) $ipBin = "0".$ipBin;

  $maskBin = sprintf("%b",$maskSplit[$i]);
  while((8-strlen($maskBin))>0) $maskBin = "0".$maskBin;

  $broadcastBin = null;//www.111cn.net
  for ($j=0; $j < 8; $j++) {
   $broadcastBin .= (!intval(substr($maskBin, $j , 1))) |
      (intval(substr($ipBin, $j , 1)) & intval(substr($maskBin, $j , 1)));
  }

  if ($i>0) $broadcast .= ".";
  $broadcast .= bindec($broadcastBin);
 }
 return $broadcast;
}

<?php
/**
 * @author 追逐__something
 * @version $id
 */
define('SCRIPT_ROOT',dirname(__FILE__).'/');
$act = trim($_REQUEST['act']);
switch($act)
{
    case 'login':
        // 获取验证码
        $code = trim($_REQUEST['code']);
       
        // $loginParams为curl模拟登录时post的参数
        $loginParams['act'] = 'login';
        $loginParams['password'] = '111111';
        $loginParams['username'] = 'wlpadmin';
        $loginParams['vcode'] = $code;
       
        // $cookieFile 为加载验证码时保存的cookie文件名
        $cookieFile = SCRIPT_ROOT.'cookie.tmp';
       
        // $targetUrl curl 提交的目标地址 www.111cn.net
        $targetUrl = 'http://local.xx.com/admin/login.php';
       
        // 参数重置
        $content = curlLogin($targetUrl, $cookieFile, $loginParams);
        echo $content;
    break;
    case 'authcode':
        // Content-Type 验证码的图片类型
        header('Content-Type:image/png');
        showAuthcode('http://local.xx.com/admin/vcode.php?r=0.03192671708666017');
        exit;
    break;
}

/**
 * 模拟登录
 * @param string $url 提交到的地址
 * @param string $cookieFile 保存cookie的文件
 * @param string $loginParams 提交时要post的参数
 * @return string $content 返回的内容
 */
function curlLogin($url, $cookieFile, $loginParams)
{
    $ch = curl_init($url);
    curl_setopt($ch,CURLOPT_COOKIEFILE, $cookieFile); //同时发送Cookie
    curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,CURLOPT_POST, 1);
    curl_setopt($ch,CURLOPT_POSTFIELDS, $loginParams); //提交查询信息
    $content = curl_exec($ch);
    curl_close($ch);
    return $content;
}

/**
 * 加载目标网站图片验证码
 * @param string $authcode_url 目标网站验证码地址
 */
function showAuthcode( $authcode_url )
{
    $cookieFile = SCRIPT_ROOT.'cookie.tmp';
    $ch = curl_init($authcode_url);
    curl_setopt($ch,CURLOPT_COOKIEJAR, $cookieFile); // 把返回来的cookie信息保存在文件中
    curl_exec($ch);
    curl_close($ch);
}
?>
<iframe src="?act=authcode" style='width: 100px; height:40px ' frameborder=0 ></iframe>
<form>
<input type="hidden" name="act" value="login">
<input type="text" name="code" />
<input type="submit" name="submit" >
</form>

//初始化变量
$cookie_file = "tmp.cookie";
$login_url = "http://xxx.com/logon.php";
$verify_code_url = "http://xxx.com/verifyCode.php";

echo "正在获取COOKIE...n";
$curlj = curl_init();
$timeout = 5;
curl_setopt($curl, CURLOPT_URL, $login_url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($curl,CURLOPT_COOKIEJAR,$cookie_file); //获取COOKIE并存储
$contents = curl_exec($curl);
curl_close($curl);

echo "COOKIE获取完成，正在取验证码...n";
//取出验证码 www.111cn.net
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $verify_code_url);
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$img = curl_exec($curl);
curl_close($curl);

$fp = fopen("verifyCode.jpg","w");
fwrite($fp,$img);
fclose($fp);
echo "验证码取出完成，正在休眠，20秒内请把验证码填入code.txt并保存n";
//停止运行20秒
sleep(20);

echo "休眠完成，开始取验证码...n";
$code = file_get_contents("code.txt");
echo "验证码成功取出：$coden";
echo "正在准备模拟登录...n";

$post = "username=maben&pwd=hahahaha&verifycode=$code";
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER,1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post);
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
$result=curl_exec($curl);
curl_close($curl);

//这一块根据自己抓包获取到的网站上的数据来做判断
if(substr_count($result,"登录成功")){
 echo "登录成功n";
}else{
 echo "登录失败n";
 exit;
}

//啦啦啦，开始做你想做的事吧。。。。。

function tourl($str) {
  $str = preg_replace('/[^a-zA-Z0-9]+/', '-', $str);
  $str = trim($str, '-');
  return strtolower($str);
}

function strtourl($str) {
  $str = htmlentities($str, ENT_QUOTES, "UTF-8");
  $str = preg_replace('/&([a-z]{1,2})(?:acute|lig|grave|ring|tilde|uml|cedil|caron);/i','1',$str);
  $str = html_entity_decode($str, ENT_QUOTES, "UTF-8");
  $str = preg_replace('/[^a-z0-9]+/i', '-', $str);
  return strtolower($str);
}