Php 如何以多页形式存储会话信息并将信息发送到mySQL表

在我一直从事的一个项目中，我遇到的路障时间最长。我有一个多页表单，在这个表单中，我通过多个页面从最终用户那里收集数据，并在最后将它们提交到我的数据库中，但是当我检查表时，没有显示任何数据

第1页的表单如下所示

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
?>

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 2
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

?>

<?php
 code.
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 3
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

 extract($_SESSION['post']); // Function to extract array.

 $DATABASE_HOST = 'localhost';
 $DATABASE_USER = 'root';
 $DATABASE_PASS = '';
 $DATABASE_NAME = 'qraccounts';
 // Try and connect using the info above.
 $con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME);
 if (mysqli_connect_errno()) {
     // If there is an error with the connection, stop the script and display the error.
     die ('Failed to connect to MySQL: ' . mysqli_connect_error());
 }
    if ($stmt = $con->prepare('INSERT INTO logindata (database_value1, database_value2, database_value3, database_value4, database_value5) VALUES (?, ?, ?, ?, ?)')) {
 $stmt->bind_param('sssss', $_POST['value1'], $_POST['value2'], $_POST['value3'], $_POST['value4'], $_POST['value5']);
 $stmt->execute();
}

?>

表2看起来是这样的

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 1
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

?>

中三看起来像

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
?>

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 2
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

?>

<?php
 code.
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 3
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

 extract($_SESSION['post']); // Function to extract array.

 $DATABASE_HOST = 'localhost';
 $DATABASE_USER = 'root';
 $DATABASE_PASS = '';
 $DATABASE_NAME = 'qraccounts';
 // Try and connect using the info above.
 $con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME);
 if (mysqli_connect_errno()) {
     // If there is an error with the connection, stop the script and display the error.
     die ('Failed to connect to MySQL: ' . mysqli_connect_error());
 }
    if ($stmt = $con->prepare('INSERT INTO logindata (database_value1, database_value2, database_value3, database_value4, database_value5) VALUES (?, ?, ?, ?, ?)')) {
 $stmt->bind_param('sssss', $_POST['value1'], $_POST['value2'], $_POST['value3'], $_POST['value4'], $_POST['value5']);
 $stmt->execute();
}

?>

完成表格看起来像

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
?>

<?php
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 2
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

?>

<?php
 code.
session_start();
// If the user is not logged in redirect to the login page...
if (!isset($_SESSION['loggedin'])) {
    header('Location: login.html');
    exit();
}
//Fetching values from form 3
foreach ($_POST as $key => $value) {
 $_SESSION['post'][$key] = $value;
 }

 extract($_SESSION['post']); // Function to extract array.

 $DATABASE_HOST = 'localhost';
 $DATABASE_USER = 'root';
 $DATABASE_PASS = '';
 $DATABASE_NAME = 'qraccounts';
 // Try and connect using the info above.
 $con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME);
 if (mysqli_connect_errno()) {
     // If there is an error with the connection, stop the script and display the error.
     die ('Failed to connect to MySQL: ' . mysqli_connect_error());
 }
    if ($stmt = $con->prepare('INSERT INTO logindata (database_value1, database_value2, database_value3, database_value4, database_value5) VALUES (?, ?, ?, ?, ?)')) {
 $stmt->bind_param('sssss', $_POST['value1'], $_POST['value2'], $_POST['value3'], $_POST['value4'], $_POST['value5']);
 $stmt->execute();
}

?>

是否有任何东西会阻止我在多个会话中将用户数据存储在SQL表中

---

我的数据库是一个包含id、电子邮件、密码（哈希）、数据库值1、数据库值2、数据库值3、数据库值4、数据库值5的单表。我是否需要像在注册页面中那样存储前面的数据？

看起来您已经在向会话传递值了。 您可以使用以下会话：

$_SESSION['database_value1'];
$_SESSION['database_value2'];

---

在数据库查询中，您应该使用

$\u SESSION['post']['value1']

而不是

$\u post['value1']

。并用

extract（…）

删除该行，因为它没有达到您期望的效果。如果我可以问一下，这个问题是怎么回事？下面有一个答案。你试过了吗？它解决了问题吗？