我尝试将用户名和密码重定向到名为 panel.php 的其他页面，但在将当前值放入表单目标页面后再次将我重定向到登录表单。我的登录代码 ->
<?php session_start(); $login=' <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>login</title> </head> <body> <h1> login form</h1> <pre> <form method="POST" action="panel.php" > <input type="text" name="username"> <input type="password" name="password"> <input type="submit" name="submit"> </form> </body> </html> '; if(isset($_POST['username']) && isset($_POST['password'])){ $username= $_POST['username']; $password= $_POST['password']; if ($username == 'teddy' && $password == '123'){ $_SESSION['X'] = true; $_SESSION['username'] = $username; header('location: panel.php'); exit(); }else{ echo "invalid credentials"; } }else{ echo $login; } ?>
和面板代码 ->
<?php session_start(); $panel = ' <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>panel</title> </head> <body> <p>welcom to the panel; dear ' . $_SESSION['username'] . ' </p> </body> </html> '; if ($_SESSION['X'] === true){ echo $panel; } else{ header('location: login.php'); } ?>
我尝试查看带有会话的面板页面
您的登录表单的操作是“panel.php”，但应该是“login.php”。通过将数据发送到 panel.php，login.php 永远没有机会处理发布数据并设置 SESSION 值，并且在未设置 SESSION 值的情况下，panel.php 会重定向回 login.php。
登录.php
<?php
session_start();
$login='<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>login</title> </head> <body> <h1> login form</h1> <pre> <form method="POST" action="login.php" > <input type="text" name="username"> <input type="password" name="password"> <input type="submit" name="submit"> </form></body> </html>';
if(isset($_POST['username']) && isset($_POST['password'])) {
$username= $_POST['username'];
$password= $_POST['password'];
if ($username == 'teddy' && $password == '123'){
$_SESSION['X'] = true;
$_SESSION['username'] = $username;
header('location: panel.php');
exit();
} else {
echo "invalid credentials";
}
} else {
echo $login;
}
面板.php
<?php
session_start();
$panel = '<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>panel</title> </head> <body> <p>welcom to the panel; dear ' . $_SESSION['username'] . ' </p></body> </html>';
if ($_SESSION['X'] === true) {
echo $panel;
} else {
header('location: login.php');
}