我一直试图弄清楚我在使用PHP和Session Cookie时遇到的这个问题。出于某种原因，当我转到同一服务器中的新页面时，sesion变量不会填充，但session_id（）是。如果我回去重新登录，它会起作用吗？我在这里尝试了几个链接并用Google搜索，但似乎没有任何效果。
class SessionRepository
{
public $errors;
public function StartSession()
{
session_start();
}
public function SetUserSession($userName,$fullName)
{
// Start session
$this->StartSession;
// Make sure there isn't something already set
/*if (isset($_SESSION['userName']))
unset($_SESSION['userName']);
*/
// Make sure there isn't something already set
/*if (isset($_SESSION['fullName']))
unset($_SESSION['fullName']);
*/
$_SESSION['userName'] = $userName;
$_SESSION['fullName'] = $fullName;
}
public function CheckLogin($userName)
{
$this->StartSession;
if(empty($_SESSION[$userName]))
{
return false;
}
return true;
}
public function DestroyUserSession()
{
$this->StartSession;
session_destroy();
}
}
include("useritemrepository.php");
include('UserItem.php');
include('sessionrepository.php');
include('login.php');
if(!isset($_POST['submitcreds']))
{
LoginPage($loginerror);
}
else
{
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
$userName = $_POST["userName"];
$password = md5($_POST["password"]);
$session = new SessionRepository();
$userRepository = new UserItemRepository();
$loggedin = $userRepository->LoginUser($userName,$password);
if($userRepository->errors !="")
echo $userRepository->errors;
if ($loggedin->UserName =="")
{
$loginerror = "Invald Credentials, Please try again";
LoginPage($loginerror);
}
else
{
$fullName = $loggedin->FirstName . " " . $loggedin->LastName;
// Build Session
$session->SetUserSession($userName,$fullName);
echo "Session:" . $_SESSION["fullName"] ." ". $_SESSION["userName"];
LoggedIn();
exit();
}
}
}
然后是登录页面（login.php）
session_start();
function LoginPage($loginerror)
{
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>
Cold Calling Center
</title>
<link rel='stylesheet' href='site.css'/>
</head>
<body>
<br/>
<br/>
<br/>
<div id="wrapper" class="wrapper" width="600px" height="600px">
<form name="login" action="<? $_SERVER["PHP_SELF"];?>" method="post">
<span id="login-header" class="login-header"><? echo $loginerror;?></span>
<br/>
<br/>
<span id="header">Welcome to Cold Calling Central</span>
<table id="login-table">
<th id="table-header">Login Form</th>
<tr id="login-row">
<td id="login-cell">UserName:</td>
<td id="login-cell"><input type="text" name="userName"/></td>
</tr>
<tr id="login-row">
<td id="login-cell">Password:</td>
<td id="login-cell"><input type="password" name="password"/></td>
</tr>
<tr id="login-row">
<td id="login-cell"><input type="submit" name="submitcreds" value="Login"/></td>
</tr>
<tr id="login-table">
<td id="login-row"><a href="forgotPassword.php">Forgot Password</a></td>
</tr>
<tr id="login-table">
<td id="login-row"><a href="register.php">Not Registered?</a></td>
</tr>
</table>
<input type="hidden" name="PHP_AUTH_USER"/>
</form>
</div>
</body>
</html>
}
function RedirectToPage()
{
$url ="loggedin.php";
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" >
<head>
<META HTTP-EQUIV="Refresh"
CONTENT="1; URL=<?
/*Redirect user to their page upon update */
echo $url;?>">
<title>Thank you for logging in</title>
<link rel="stylesheet" type="text/css" media="screen" href="briefing.css"/>
</head>
<body>
<div id="shadow">
<div id="wrapper">
<div id="branding"></div>
<div id="content">
<h2></h2>
<table class="briefing" width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td colspan="2"><h4>Thank you for logging in <? echo $_SESSION['fullName'];?>.. you are now being redirected to your page!</h4></td>
<td> </td>
</tr>
</table>
</div>
</div>
</div>
</body>
</html>
<?
}
function LoggedIn()
{?>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta name="generator" content="HTML Tclassy for Linux (vers 6 November 2007), see www.w3.org">
<title>Registration</title>
<link rel='stylesheet' href='site.css' type="text/css">
</head>
<body>
<div id="wrapper" class="wrapper">
<span id="login-header" class="login-header"><? echo "Welcome: " . $_SESSION['fullName']; ?></span>
<ul id="menu-List" class="menu-list">
<li class="list-item"><a class="menu-link" href="loggedin.php">Home</a></li>
<li class="list-item"><a class="menu-link" href="test.php">Home</a></li>
<li class="list-item"><a class="menu-link" href="index.php">Home</a></li>
<li class="list-item"><a class="menu-link" href="index.php">Home</a></li>
</ul>
</div>
</body>
</html>
}
以下是目标网页中其中一个链接的页面。当我使用链接转到test.php时，（下面的代码，它没有进行Fullname会话，但是如果我回去再次登录，它会有效吗？
session_start();
echo session_id();
echo "Name: " . $_SESSION["fullName"];
答案 0 :(得分：1)
如果您的代码粘贴正确，则会出现错误：
public function SetUserSession($userName,$fullName)
{
// Start session
$this->StartSession;
// Should be
$this->StartSession();
- 更新 -
// landing page
session_start();
$_SESSION['test'] = 'I am hax0r';
// test page
session_start();
var_dump($_SESSION['test']); // Should output 'I am hax0r'
答案 1 :(得分：1)
放 在session_start（）; 始终位于页面顶部！
所以这里它可能会起作用：
<?
session_start();
include("useritemrepository.php");
include('UserItem.php');
include('sessionrepository.php');
include('login.php');
...
因为：如果您包含的其他文件中有一个（或更多）的空格。 Session_start不起作用。此空间将写入输出，session_start无法修改页面的http标头。通常在发生这种情况时会收到错误/警告/通知。因此，启用您的错误或查找错误日志文件。自从你开始 - ＆gt;将警告和错误放在输出中，并确保在部署时禁用它们。
本质上是3件adivce：
答案 2 :(得分：0)
看着
public function CheckLogin($userName)
{
$this->StartSession;
if(empty($_SESSION[$userName]))
{
return false;
}
return true;
}
我认为它应该是：
public function CheckLogin($userName)
{
$this->StartSession;
if(empty($_SESSION['userName']))
{
return false;
}
return true;
}