0
我只是想做一个简单的登录网站。我存储在会话变量电子邮件ID：无法在不同的页面访问会话变量
$_SESSION['user']=$email;
但是，当我试图在另一个页面访问此会话变量，它显示了一个错误：
Undefined index: user in C:\xampp\htdocs\web\home.php on line 11
的login.php
<?php
if($_SERVER["REQUEST_METHOD"]=="POST")
{
$email=$_POST["email"];
$password=$_POST["password"];
$bool=true;
include 'dbs_con.php';
$query=mysqli_query($conn,"SELECT * FROM user_info WHERE email='$email'");
if($query === FALSE) {
die(mysqli_error($conn)); // TODO: better error handling
}
$exists = mysqli_num_rows($query);
$table_users = "";
$table_password = "";
if($exists > 0) //IF there are no returning rows or no existing username
{
while($row = mysqli_fetch_assoc($query))
{
$table_users = $row['email']; // the first username row is passed on to $table_users, and so on until the query is finished
$table_pass = $row['password'];
//echo "current db value".$table_users." & ".$table_pass;
}
// echo "USER INPUT".$email." & ".$password;
// echo "current db value".$table_users." & ".$table_pass;
if(($email == $table_users) && ($password==$table_pass)) // checks if there are any matching fields
{
echo "yes";
if($password==$table_pass)
{
$_SESSION['user'] = $email; //set the username in a session. This serves as a global variable
echo $_SESSION['user'];
header("location: home.php"); // redirects the user to the authenticated home page
}
else
{
Print '<script>alert("Incorrect Password!");</script>'; // Prompts the user
Print '<script>window.location.assign("login.php");</script>'; // redirects to login.php
}
}
else
{
Print '<script>alert("Incorrect username!");</script>'; // Prompts the user
Print '<script>window.location.assign("login.php");</script>'; // redirects to login.php
}
}
}
?>
home.php
<?php
session_start();
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<header>
<?php print $_SESSION['user']; ?>
</header>
</body>
</html>