php - 无法获取登录成功查看

Question

所以我在登录表单中输入了写入凭据，它应该将我重定向到显示成功登录的 home.php 页面，但是当我点击提交时，页面只是刷新并且没有执行任何事物。如果我在登录后更改 login_action 加载的内容，它会正确执行，但如果我告诉它加载 home.php，它什么也不做……有帮助吗？

这是我的 home.php 代码:

<?php

session_start() ;

if( !isset($_SESSION['username']))
{
    require('login_tools.php');
    load();         
}

$page_title = 'Home';

echo"<h1>HOME</h1>
<p>You are now logged in, {$_SESSION['username']}</p>";

echo'<p><a href="goodbye.php">Logout</a></p>';

?>

和 login_action.php

   <?php

if ( $_SERVER['REQUEST_METHOD'] == 'POST')
{
require ('../connect_db.php') ;
require ('login_tools.php') ;

list ($check, $data) = 
validate($dbc, $_POST['username'], $_POST['password']);

if ($check )
{
 session_start() ;

 $_SESSION['user_id'] = $data['user_id'] ;
 $_SESSION['username'] = $data['username'] ;

 load('home.php') ;
}
else {$errors = $data ;}

mysqli_close( $dbc);
}

include('login.php'); 
?>

**login.php:**


 <?php

$page_title = 'Login';

if ( isset( $errors ) && !empty( $errors))
{
echo'<p id="err_msg">Oops! There was a problem:<br>';
foreach ( $errors as $msg )
{
    echo " - $msg<br>";
}
echo 'Please try again or <a href="register.php">Register</a></p>';
}
?>
<h1>Login</h1>
<form action="login_action.php" method="POST">
<p>
Username: <input type="text" name="username">
</p><p>
Password: <input type="password" name="password">
</p><p>
<input type="submit" value="Login" >
</p>
</form>

Answer 1

根据您的代码，它应该刷新。事实上，它不是刷新，它是无限加载 login.php 将其包含在 login_action.php

的末尾

你应该使用 header重定向而不是包括如下:

    <?php
    $host  = $_SERVER['HTTP_HOST'];
    $uri   = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');

    if ( $_SERVER['REQUEST_METHOD'] == 'POST')
    {
    require ('../connect_db.php') ;
    require ('login_tools.php') ;

    list ($check, $data) = 
    validate($dbc, $_POST['username'], $_POST['password']);

    if ($check )
    {
     session_start() ;

     $_SESSION['user_id'] = $data['user_id'] ;
     $_SESSION['username'] = $data['username'] ;

     $extra = 'home.php';
    header("Location: http://$host$uri/$extra");
exit;
    }
    else {
    $errors = $data ;
    $_SESSION['Errors'] = $errors;
    $extra = 'login.php';
    header("Location: http://$host$uri/$extra");
    exit;
    }

    mysqli_close( $dbc);
    }


    ?>

在 login.php 中

$page_title = 'Login';

    if ( isset( $_SESSION['Errors'] ) && !empty( $_SESSION['Errors'])){
    $errors = $_SESSION['Errors'];
    //continue your code...
    // at the end of the code:
    unset($_SESSION['Errors']);