Question

如您所知，任何与服务器的交换都会使header()变得不稳定。对于我的项目，在登录控制器中，我看到用户是否插入了真正的user / pass，我设置了会话$_SESSION['email']，然后将其重定向到user_home控制器。这会导致网站托管时出现问题。问题是什么意思？我只是说它什么都不做，既不是错误也不是别的。我该怎么办？

以下是使用CodeIgniter编写的代码作为登录控制器的示例。密切注意重定向和该会话分配之前。

$data['email'] = $this->input->post("email");
$data['password'] = $this->input->post("password");

echo ($login_result = $this->authentication->login($data));

if($login_result == -1)
{                   
    $this->session->set_flashdata("login-result", FAILED);
    redirect(base_url("access/login")); 
}
else if($login_result != -1)
{                                       
    if($login_result['status']  == 0) // not activated
    {
        $this->session->set_flashdata("login-result", NOACT); // for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }
    else if($login_result['status']  == 1) // activated
    {
        $this->session->set_userdata("email", input("email"));
        redirect(base_url("panel/home"));   
    }
    else if($login_result['status']  == 2) // banned
    {
        $this->session->set_flashdata("login-result", BANNED);// for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }                       
}

Answer 1

您重定向功能正在使用标题：

header('Location: http://www.example.com/');

必须在发送任何实际输出之前调用

header()，无论是普通HTML标记，文件中的空行还是PHP。

$data['email'] = $this->input->post("email");
$data['password'] = $this->input->post("password");

$login_result = $this->authentication->login($data);

if($login_result == -1)
{                   
    $this->session->set_flashdata("login-result", FAILED);
    redirect(base_url("access/login")); 
}
else if($login_result != -1)
{                                       
    if($login_result['status']  == 0) // not activated
    {
        $this->session->set_flashdata("login-result", NOACT); // for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }
    else if($login_result['status']  == 1) // activated
    {
        $this->session->set_userdata("email", input("email"));
        redirect(base_url("panel/home"));   
    }
    else if($login_result['status']  == 2) // banned
    {
        $this->session->set_flashdata("login-result", BANNED);// for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }                       
}

echo $login_result;

Answer 2

修复Dmitriy的建议（可能是正确答案）将是：

$data['email'] = $this->input->post("email");
$data['password'] = $this->input->post("password");

$login_result = $this->authentication->login($data);
if($login_result == -1)
{                   
    $this->session->set_flashdata("login-result", FAILED);
    redirect(base_url("access/login")); 
}
else if($login_result != -1)
{                                       
    if($login_result['status']  == 0) // not activated
    {
        $this->session->set_flashdata("login-result", NOACT); // for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }
    else if($login_result['status']  == 1) // activated
    {
        $this->session->set_userdata("email", input("email"));
        redirect(base_url("panel/home"));   
    }
    else if($login_result['status']  == 2) // banned
    {
        $this->session->set_flashdata("login-result", BANNED);// for constant use please check the appropriate files
        redirect(base_url("access/login")); 
    }                       
}

// echo ($login_result = $this->authentication->login($data));

php重定向，前面有一个会话分配

2 个答案: