Php 投票系统的setcookie和ask cookie值

我想设置一个cookies，让用户在4个类别（悲伤、愤怒、有趣、酷）中只投票一次。 我是一个初学者，所以我知道我的代码很不方便，但这是我第一次尝试，所以如果我有几行多多少少，对我来说并不重要。 出于某种原因，浏览器不会加载vote.php文件（当用户单击一个投票选项时调用）。我就是找不到错误…也许有人马上就看到了？ [在我插入cookie之前，代码文件已完全加载，因此调用不是问题。]

<?php
require_once('connect.php');
$newsid = $_POST['id'];

if (isset($_POST['submit'])) {
    if(isset($_COOKIE['votecookie']) && $_COOKIE['votecookie'] !== 'sad') {
        if($_COOKIE['votecookie'] == 'cool') {  
            $query = mysql_query('UPDATE `index` SET cool=cool-1 WHERE id = {$newsid}');
        }
        if($_COOKIE['votecookie'] == 'funny') { 
            $query = mysql_query('UPDATE `index` SET funny=funny-1 WHERE id = {$newsid}');
        }
        if($_COOKIE['votecookie'] == 'sad') {   
            $query = mysql_query('UPDATE `index` SET enraging=enraging-1 WHERE id = {$newsid}');
        }
        setcookie('votecookie', 'sad');
        $query = mysql_query('UPDATE `index` SET sad=sad+1 WHERE id = '{$newsid}'');
        $hosts = $_SERVER['HTTP_HOST'];
        $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
        $extras = 'news.php?id={$newsid}&sad=1';
        header('Location: http://$hosts$uris/$extras');
        exit;
    }
    if(!isset($_COOKIE['votecookie']) {
            setcookie('votecookie', 'sad');
            $query = mysql_query('UPDATE `index` SET sad=sad+1 WHERE id = '{$newsid}'');
            $hosts = $_SERVER['HTTP_HOST'];
            $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
            $extras = 'news.php?id={$newsid}&sad=1';
            header('Location: http://$hosts$uris/$extras');
            exit;
        }

        if(isset($_COOKIE['votecookie']) && $_COOKIE['votecookie'] == 'sad') {
            $hosts= $_SERVER['HTTP_HOST'];
            $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
            $extras = 'news.php?id={$newsid}&sad=0';
            header('Location: http://$hosts$uris/$extras');
            exit;
        }
        }
    else {
        $hosts= $_SERVER['HTTP_HOST'];
        $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
        $extras = 'news.php?id={$newsid}&sad=0';
        header('Location: http://$hosts$uris/$extras');
        exit;
        ?>

---

如果有人对答案感兴趣：我现在就是这样做的（我的代码中还有一些错误和推理错误）

---

您应该改用会话。用户可以修改和删除COOKIE为什么在块中有
if（$\u COOKIE['votecookie']='sad'）
，而该块仅在
votecookie
不是
sad
时才会运行，关于头（'Location:http://$hosts$uris/$extras'）；-因为这些是单引号，所以正在使用文本值-它试图重定向到http://$hosts$uris/$extras。使用双引号分析字符串中的变量。您是否希望在第一个
if
块中
setcookie（'votecookie'，'sad'）
更新在下一个
if
中测试的
$\u COOKIE['votecookie']
<代码>$\u COOKIE

仅在刷新页面时设置。感谢您的回答@巴尔马：sad确实是一个错误，我纠正了它。关于你的第二个问题：不，我不期望它。你能具体解释一下你改变了什么吗？很难看出区别。

<?php
require_once('connect.php');
$newsid = $_POST['id'];
if (isset($_POST['submit'])) {
    if(isset($_COOKIE[$newsid]) && $_COOKIE[$newsid] != 'sad') {
        if($_COOKIE[$newsid] == 'cool') {   
        $query = mysql_query("UPDATE `index` SET cool=cool-1 WHERE id = '{$newsid}'");
        }
        if($_COOKIE[$newsid] == 'funny') {  
        $query = mysql_query("UPDATE `index` SET funny=funny-1 WHERE id = '{$newsid}'");
        }
        if($_COOKIE[$newsid] == 'enraging') {   
        $query = mysql_query("UPDATE `index` SET enraging=enraging-1 WHERE id = '{$newsid}'");
        }
    $query = mysql_query("UPDATE `index` SET sad=sad+1 WHERE id = '{$newsid}'");
    setcookie($newsid, "sad", time() + (10 * 365 * 24 * 60 * 60));
    $hosts = $_SERVER['HTTP_HOST'];
    $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
    $extras = "news.php?id={$newsid}&sad=1";
    header("Location: http://$hosts$uris/$extras");
        exit;
    }
    if(!isset($_COOKIE[$newsid])) {
        $query = mysql_query("UPDATE `index` SET sad=sad+1 WHERE id = '{$newsid}'");
        setcookie($newsid, "sad", time() + (10 * 365 * 24 * 60 * 60));
        $hosts = $_SERVER['HTTP_HOST'];
        $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
        $extras = "news.php?id={$newsid}&sad=1";
        header("Location: http://$hosts$uris/$extras");
            exit;
    }   
    if(isset($_COOKIE[$newsid]) && $_COOKIE[$newsid] == 'sad') {
        $hosts= $_SERVER['HTTP_HOST'];
        $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
        $extras = "news.php?id={$newsid}&sad=0";
        header("Location: http://$hosts$uris/$extras");
            exit;
    }
}
else {
    $hosts= $_SERVER['HTTP_HOST'];
    $uris = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
    $extras = "news.php?id={$newsid}&sad=0";
    header("Location: http://$hosts$uris/$extras");
    exit;
}
?>