Question

我有一个页面检查$ _POST是否已设置，然后将发布数据保存到会话变量$ _SESSION。页面重定向时，它不会在结果页面上显示会话数据。当我执行print_r（$ _ SESSION）时，它显示一个空数组。在每个页面上，我都包含一个名为include.php的文件。在该页面中，执行以下操作

<?php session_start(); ?>

index.php

<?php 

 include 'assets/include.php';
 require 'assets/dbinfo.php';

 $query = "SELECT * FROM Authors ORDER BY first_name";
 $resultObj = $connection->query($query);

 if(count($_POST))
 {
   $_SESSION['formPostData'] = $_POST;
   header('Location: final.php');
 }

?>

<!DOCTYPE html>
<html>
    <head>
        <title>PHP Fundamentals</title>
        <link href="assets/styles.css" rel="stylesheet" type="text/css" />
    </head>
    <body>
        <div id="Header">
            <img src="assets/Dickens_Gurney_head.jpg" border="0" alt="">
            <h2>
                Join Our Literature Mailing List
            </h2>
        </div>        
        <div id="Body">
            <form method="post" action="index.php" >
                <div>
                    <label>Favorite Author:</label>
                    <select name="author">
                        <?php while($row = $resultObj->fetch_assoc()): ?>
                            <option value="<?=$row['id']?>"><?=$row['first_name']?> <?=$row['last_name']?></option>
                        <?php endWhile; ?>
                    </select>
                </div>      
                <div class="multiple">
                    <label>Favorite Century:</label>
                    17th Century <input type="checkbox" name="century[]" value="17th">
                    18th Century <input type="checkbox" name="century[]" value="18th"> 
                    19th Century <input type="checkbox" name="century[]" value="19th"> 
                </div>
                <div>
                    <label>Comments:</label>
                    <textarea name="comments"></textarea>
                </div>
                <div>
                    <label>Name:</label>
                    <input type="text" name="name" />
                </div>
                <div>
                    <label>E-mail Address:</label>
                    <input type="text" name="email" />
                </div>
                <div  class="multiple">
                    <label>Receive Newsletter:</label>
                    Yes <input type="radio" name="newsletter" value="yes">
                    No <input type="radio" name="newsletter" value="no">
                </div>
                <div class="multiple">
                    <label>&nbsp;</label>
                    <input type="submit" name="submit" value="Join Mailing List">
                </div>
            </form>
        </div>
    </body>
</html>

final.php

<?php

include 'assets/include.php';

echo "<pre>";
print_r($_SESSION);
echo "</pre>";

$postedData = $_SESSION['formPostData'];

?>

<!DOCTYPE html>
<html>
    <head>
        <title>PHP Fundamentals</title>
        <link href="assets/styles.css" rel="stylesheet" type="text/css" />
    </head>
    <body>
        <div id="Header">
            <img src="assets/Dickens_Gurney_head.jpg" border="0" alt="">
            <h2>
                Mailing List Information
            </h2>
        </div>        
        <div id="Body">
            <div>
                <label>Favorite Author:</label> 
                <span><?=$postedData['author']?>&nbsp; </span>
            </div>      
            <div>
                <label>Favorite Century:</label>
                <span><?=$postedData['century']?>&nbsp; </span>
            </div>
            <div>
                <label>Comments:</label>
                <span><?=$postedData['comments']?>&nbsp; </span>
            </div>
            <div>
                <label>Name:</label>
                <span><?=$postedData['name']?>&nbsp; </span>
            </div>
            <div>
                <label>E-mail Address:</label>
                <span><?=$postedData['email']?>&nbsp; </span>
            </div>
            <div>
                <label>Receive Newsletter:</label>
                <span><?=$postedData['newsletter']?>&nbsp; </span>
            </div>
        </div>
    </body>
</html>

Answer 1

您的表单似乎直接发布到final.php，因此您应该能够访问$_POST中发布的数据。

由于index.php中的代码未运行（表单发布到另一个文件），因此不会将其设置为会话

如果要将数据设置到会话中，则应在final.php中进行设置。

Answer 2

按照index.php中的表单操作，您的表单将发布到final.php，在此处您未设置任何会话数据，因此会话数据为空数组。

如果您希望将会话数据打印在final.php中，那么在设置会话数据后必须将表单操作更改为index.php，您需要将其重定向到final.php 然后，您将获得会话数据。

会话数据未显示

2 个答案: