PHP获取IP 文件写入与行修改
·做了一个投票放在微信订阅号上，通过cookie来实现禁止刷票，这个真是只能防君子不能防小人，出现了恶意刷票；所以最后改为用IP来限制； 因为是一个短暂的活动，就把IP的记录写入了文件，没有再写入表中； 我的验证规则是：同个ID 对应的同一个IP3分钟内只
·做了一个投票放在微信订阅号上，通过cookie来实现禁止刷票，这个真是只能防君子不能防小人，出现了恶意刷票；所以最后改为用IP来限制；
因为是一个短暂的活动，就把IP的记录写入了文件，没有再写入表中；
我的验证规则是：同个ID 对应的同一个IP3分钟内只能投一票；
代码写的不是很好，急着上交 ，先看着吧 ，以后再完善
function GetIP() {
if ($_SERVER["HTTP_X_FORWARDED_FOR"])
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
else if ($_SERVER["HTTP_CLIENT_IP"])
$ip = $_SERVER["HTTP_CLIENT_IP"];
else if ($_SERVER["REMOTE_ADDR"])
$ip = $_SERVER["REMOTE_ADDR"];
else if (getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("HTTP_CLIENT_IP"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("REMOTE_ADDR"))
$ip = getenv("REMOTE_ADDR");
else
$ip = "Unknown";
return $ip;
}
$iptxt = fopen("./data/lovewall.txt", "a+");
$ip = GetIP();
$ifok = $i = 1;
while (!feof($iptxt)) {
$now = fgets($iptxt);//获取遍历行的内容
if(!empty($now)){
$now_arr = explode('#',$now);
if($now_arr[1]==$ip&&$now_arr[2]==$_G['gp_show']."\n"){
$ifok = 0;
if($now_arr['0']+180>time()){
$return = array('status'=>0,'err_msg'=>'一封情书三分钟内只限赠送一次哦');
echo json_encode($return);
exit;
}else{
$all = file_get_contents('./data/lovewall.txt');
$new = time().'#'.$ip.'#'.$_G['gp_show']."\n";
$update_str = str_replace($now,$new, $all);//替换 间接实现修改
file_put_contents('./data/lovewall.txt', $update_str);
}
}
}
$i++;
}
if($ifok){
$now = time()."#".$ip."#".$_G['gp_show'];
fwrite($iptxt,$now."\n");
}
fclose($iptxt);
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