Question

我有一个upvote按钮和一个downvote按钮，我正在尝试使用cookie来防止同一个用户在投票后进行投票，但是我的代码让他们在灰化投票按钮之前完全投票两次。我的代码出了什么问题？

<html>
<form action="" method="post">
<input type="hidden" name="action" value="submit"/>
<input id="upvote" type="submit" name="submit" value="Upvote" 
    <?php 
    if (isset($_COOKIE['chocolatechip']) and $_COOKIE['chocolatechip'] = 
"voted=1") 
        {
        echo "disabled";
        } 
    ?>>
<input id="downvote" type="submit" name="submit" value="Downvote"
    <?php 
    if (isset($_COOKIE['chocolatechip']) and $_COOKIE['chocolatechip'] = 
"voted=1") 
        {
        echo "disabled";
        } 
    ?>>
</form>
</html>

<?php

if (isset($_POST['action']))
{
if ($_POST['submit'] == "Upvote") // if upvoted clicked
    {
    mysqli_query($conn,"UPDATE object_votes_table SET upvotes = upvotes + 1 
WHERE object = 'Ceramic'");
    setcookie('chocolatechip', 'voted=1');
    }
if ($_POST['submit'] == "Downvote") // if downvoted clicked
    {
    mysqli_query($conn,"UPDATE object_votes_table SET downvotes = downvotes 
+ 1 WHERE object = 'Ceramic'");
    setcookie('chocolatechip', 'voted=1');
    }
}
?>

Answer 1

尝试

... and $_COOKIE['chocolatechip'] == "voted=1"

而不是

... and $_COOKIE['chocolatechip'] = "voted=1"

我没有解释为什么你的代码在第二次之后工作，但希望这会有所帮助......

多投票防止代码允许用户投票两次

1 个答案: