$_SESSION 未使用 Ajax 更新
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【中文标题】$_SESSION 未使用 Ajax 更新【英文标题】：$_SESSION is not updating with Ajax 【发布时间】：2021-04-20 02:14:28 【问题描述】：我正在尝试更新会话 playerPlan，但它没有给我更新的计划值，而是给我 1，这是预设值。我怀疑 php 没有识别我的帖子，但我的其他 PHP 文件正在识别我的文本输入帖子。对于我的复选框，PHP 也无法识别该帖子，因此我不得不使用 jquery。所以现在我有一个 ajax，它只是在控制台中返回会话的值并将其更新到我的数据库中。我在本地主机上使用它：XAMPP。我现在不关心 SQL 注入，但我很高兴有一个密码哈希教程，因为我学过 md5。我没有包含我插入的 PHP 文件。
FORM:
<div class="container" style="margin: 50px;">
<form action="actionSignUp.php" method="post" id="signupForm" class="signupForm">
<h2>Signup</h2>
<input type="hidden" name="loginActive" id="loginActive" value="0">
<br>
<div class="form-group row">
<label for="username" class="col-lg-16 col-form-label">Username:</label>
<div class="col-lg-8">
<input type="text" class="form-control signupInput" name="username" id="username" aria-describedby="username" autocomplete="username" autofocus required>
</div>
<p><span class="error"><?php echo $usernameError;?></span><p>
</div>
<div class="form-group row">
<label for="password" class="col-lg-16 col-form-label">Password:</label>
<div class="col-lg-8">
<input type="password" class="form-control signupInput" id="Password" name="password" autocomplete="current-password" required>
</div>
<p><span class="error"><?php echo $passwordError;?></span><p>
</div>
<h4>Account Type <i class="far fa-question-circle info" data-toggle="tooltip" data-placement="right" title="Whenever you have all free accounts checked, payment method should be hidden, but if not then click on any paid account and then click back!" ></i></h4>
<p>Visit <a href="pricing.php">Plan</a> for pricing details.</p>
<div class="input-group-prepend row">
<input type="button" class="dropdown-item col-md-4 active dropdownI plan" value="Player: Free Account $0.00/Mo" class="FA" id="dfreePlayerAccount" name="fa">
<input type="button" class="dropdown-item col-md-4 dropdownI plan" value="Player: Pro Account $5.99/Mo" class="FA" id="dproPlayerAccount" name="pa">
<input class="dropdown-item col-md-4 dropdownI plan" value="Player: Premium Account $9.99/Mo" class="FA" id="dpremiumPlayerAccount" name="pra">
</div>
<br>
<input type="radio" id="freePlayerAccount" class="free playAccount readonly" name="account" value="1" checked>
<label for="freePlayerAccount">Player: Free Account $0.00/Mo</label><br>
<input type="radio" id="proPlayerAccount" class="paid playAccount readonly" name="account" value="2">
<label for="proPlayerAccount">Player: Pro Account $5.99/Mo</label><br>
<input type="radio" id="premiumPlayerAccount" class="paid playAccount readonly" name="account" value="3">
<label for="premiumPlayerAccount">Player: Premium Account $9.99/Mo</label><br>
<hr>
<h5>Optional:</h5>
<div class="row">
<input type="button" class="dropdown-item col-sm-6 CA" value="Creator: Pro Account $9.99/Mo" name="pca" id="dproCreatorAccount">
<input type="button" class="dropdown-item col-sm-6 CA" value="Creator: Premium Account $14.99/Mo" id="dpremiumCreatorAccount" name="prca">
</div>
<br>
<input type="radio" id="creatorProAccount" class="paid creatorAccount readonly" name="creatorAccount" value="5">
<label for="creatorProAccount">Creator: Pro Account $9.99/Mo</label><br>
<input type="radio" id="creatorPremiumAccount" class="paid creatorAccount readonly" name="creatorAccount" value="6">
<label for="creatorPremiumAccount">Creator: Premium Account $14.99/Mo</label><br>
<hr>
<div class="hiddenPaymentMethod"> <h5>Payment Method</h5>
<input type="radio" id="Paypal" name="payment" value="Paypal" class="payment">
<label for="Paypal">Paypal</label><br>
<input type="radio" id="creditCard" name="payment" value="CreditCard" class="payment">
<label for="creditCard">Credit Card</label><br>
<input type="text" style="display:none;" name="creditCardNumber" id="creditCardNumber" placeholder="Card Number">
<input type="radio" id="debitCard" name="payment" value="DebitCard" class="payment">
<label for="debitCard">Debit Card</label>
<input type="text" style="display:none;" name="debitCardNumber" id="debitCardNumber" placeholder="Card Number">
<br></div>
<br>
<input type="checkbox" id="termsAndConditions" class="conditions" name="termsandconditions" value="0">
<label for="termsAndConditions"> I have read and agreed to the Terms and Conditions <span data-toggle="modal" data-target="#exampleModal"><i class="far fa-question-circle questionMark"></i></span></label>
<p id="errors"></p>
<p id="tacError" style="color:red"></p>
<input type="submit" class="btn btn-primary" name="signupButton" id="signUpButton" value="Submit">
</form>
</div>
AJAX：
$(document).ready(function()
$('#signupForm').on('submit' , function(e)
e.preventDefault();
var plan = $('.plan').val();
$.ajax(
method: "POST",
url: "ChangeUserPlan.php",
data: plan : plan + "fa=" + $("#dfreePlayerAccount").val() + "&pa=" + $("#dproPlayerAccount").val() + "&pra=" + $("#dpremiumPlayerAccount").val()
).done(function(updated)
console.log(updated);
).fail(function(xhr, textStatus, errorThrown)
console.log("Error Requesting. Please Try Again Later.");
);
);
);
会话更新 PHP 文件：
//session_start() is already stated in the signup.php file.
require('signup.php');
$link = mysqli_connect("****", "****", "****", "****");
if(mysqli_connect_error())
die("Couldn't connect to the database. try again later.");
$query = "SELECT * FROM `users`";
if($result = mysqli_query($link, $query))
$row = mysqli_fetch_array($result);
$_SESSION['playerPlan'] = "1";
if(isset($_REQUEST['fa']))
$_SESSION['playerPlan'] = "1";
if(isset($_REQUEST['pa']))
$_SESSION['playerPlan'] = "2";
if(isset($_REQUEST['pra']))
$_SESSION['playerPlan'] = "3";
if($_SERVER["REQUEST_METHOD"] == "POST")
echo $_SESSION['playerPlan'];
else
echo "no";
?>
编辑：我使用的是最新版本的 PHP。
【问题讨论】：
请参阅 this question 以获取 password_hash()。 不要使用 MD5 存储密码 回应查询、会话和帖子：INSERT INTOusers (username, password, plan) VALUES ('bbbbbbbb', 'hebf', '1') 1 Array ( [username] => bbbbbbbb [password] => hebf [termsandconditions] => 1 [fa] => 玩家：免费账户 $0.00/月 [pa] => 玩家：专业账户 $5.99/月 [pra] => 玩家：高级帐户 $9.99/Mo [pca] => 创建者：专业帐户 $9.99/Mo [prca] => 创建者：高级帐户 $14.99/Mo [帐户] => 1 [loginActive] => 0 )
我为此检查了值 2，但它给了我帐户名称的值 1，因为我有检查收音机的按钮。
@PalDhillon，我对某些部分进行了硬编码，以便您轻松理解。
【参考方案1】：
您的 ajax 函数未正确请求。
您的 ajax 函数应如下所示。
$(document).ready(function()
$('#signupForm').on('submit' , function(e)
e.preventDefault();
var plan = $('.plan').val();
var playAccount = $('input[name="account" ]:checked').val();
var key = "";
if (playAccount == "1")
key = "fa";
plan = $("#dfreePlayerAccount").val();
else if (playAccount == "2")
key = "pa";
plan = $("#dproPlayerAccount").val();
else if (playAccount == "3")
key = "pra";
plan = $("#dpremiumPlayerAccount").val();
var data =
plan: plan
;
data[key] = plan;
$.ajax(
method: "POST",
url: "ChangeUserPlan.php",
data: data
).done(function(updated)
console.log(updated);
).fail(function(xhr, textStatus, errorThrown)
console.log("Error Requesting. Please Try Again Later.");
);
);
);
【讨论】：
另外，我为什么要那样做ajax。有原因吗？偏好？ 如果你这样要求，你的帖子参数将是plan: xxxfa:yyy&pa:zzz&pra:xxx
虽然有一个问题，控制台显示了正确的会话，但查询插入了它之前的会话。我知道这可能很难理解，所以我给你举个例子。假设用户 1 选择高级帐户。用户 1 获得了他之前的会话值。然后假设用户 2 出现并选择免费，然后查询插入来自用户 1 的高级会话而不是用户 2 的免费会话。以上是关于$_SESSION 未使用 Ajax 更新的主要内容，如果未能解决你的问题，请参考以下文章