javascript - 将 javascript 变量转换为 php 并使用 session 发送它

Question

这个问题已经有答案了:

How do I pass JavaScript variables to PHP? (16 个回答)

已关闭 6 年前。

我想使用 session 发送文章 ID，源页面包含许多打开一个网页的链接，但 id 存在于 href 的 ID 属性中。就像

<br/>
< a id="13" class="openpage" href="test.html">open test form< /a><br />

我使用了javascript来传递变量

$(".openpage").on('click', function() {
    var artid = $(this).attr("id");
    <?php $_SESSION['artid'] = "<script>document.write(artid)</script>"?>
    });

var artid 在加载新页面之前具有正确的值，而 $_SESSION['artid'] 未获取 artid 的值。

Answer 1

You'll have to update your index file and the test.html becomes test.php

jQuery part of the code takes the value of your ID attribute on the link Stores it in a cookie.

In your test.php The value of the COOKIE is assigned to your SESSION and the COOKIE is cleared using the in-built php set_cookie() function to set the cookie with an empty value (For security reasons);

cookie 将在1 分钟后过期。如果您愿意，可以更新它。

-

//index.php file

<a id="13" class="openpage" href="test.php" >open test form</a>

<!-- JS HERE ---> 

<script src="http://code.jquery.com/jquery-3.2.1.min.js"></script>
<script type="text/javascript">
    $(document).ready(function(){

 function setCookie(key, value) {
            var expires = new Date();
            expires.setTime(expires.getTime() + (60 * 1000));
            document.cookie = key + '=' + value + ';expires=' + expires.toUTCString();

}

  $(".openpage").on('click', function() {
      var artid = $('.openpage').attr("id");
        setCookie('cookie_session', artid);
});

});
</script>

//test.php file

 <?php
      if(isset($_COOKIE['cookie_session'])):
      $_SESSION['artid'] =  $_COOKIE['cookie_session'];
      setcookie("cookie_session", '');
      echo $_SESSION['artid'];
      endif;
   ?>

Here's a screenshot of the COOKIE in the browser's Dev tool > Application > Cookies

As you can see the COOKIE is no more in your browser and the SESSION now holds the data.

希望这有帮助:)