5 php variables session redirect
我使用的是PHP 4.3.9,Apache/2.0.52
我正在尝试使登录系统工作,在登录时可以在会话中注册DB值.一旦我被重定向,我就会丢失会话变量.
我正在使用以下代码在我的登录表单页面和重定向页面上打印会话ID /值:
echo '<font color="red">session id:</font> ' . session_id() . '<br>';
echo '<font color="red">session first name:</font> ' . $_SESSION['first_name'] . '<br>';
echo '<font color="red">session user id:</font> ' . $_SESSION['user_id'] . '<br>';
echo '<font color="red">session user level:</font> ' . $_SESSION['user_level'] . '<br><br>';
这是我的浏览器从我的登录页面打印的内容(我只是将标题重定向到登录页面).这也是来自我的数据库的正确信息,所以此时一切都很好.
session id: 1ce7ca8e7102b6fa4cf5b61722aecfbc
session first name: elvis
session user id: 2
session user level: 1
这是我重定向/登录页面上打印的内容(当我取消注释标题/重定向时).会话ID是相同的,但我没有得到各个会话变量的值.
session id: 1ce7ca8e7102b6fa4cf5b61722aecfbc
session first name:
session user id:
session user level:
我收到以下错误:
未定义索引:first_name
未定义索引:user_id
未定义索引:user_level
我有一个全局的header.php文件,我的loggedIN.php没有调用,虽然loginOUT.php确实 - 为会话祝酒):
header.php文件
<?php
ob_start();
session_start();
//if NOT on loggedout.php, check for cookie. if exists, they haven't explicity logged out so take user to loggedin.php
if (!strpos($_SERVER['PHP_SELF'], 'loggedout.php')) {
/*if (isset($_COOKIE['access'])) {
header('Location: www.mydomain.com/loggedin.php');
}*/
} else {
//if on loggedout.php delete cookie
//setcookie('access', '', time()-3600);
//destroy session
$_SESSION = array();
session_destroy();
setcookie(session_name(), '', time()-3600);
}
//defines constants and sets up custom error handler
require_once('config.php');
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
some page layout stuff
Login portion is eventually called via include
footer stuff
我的loggedIN.php什么也没做,只是启动会话
<?php
session_start();
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
我的登录脚本的逻辑,关键部分是我正在获取数据库结果直接进入$ _SESSION(大约一半):
if (isset($_POST['login'])) {
//access db
require_once(MYSQL);
//initialize an errors array for non-filled out form fields
$errors = array();
//setup $_POST aliases, clean for db and trim any whitespace
$email = mysql_real_escape_string(trim($_POST['email']), $dbc);
$pass = mysql_real_escape_string(trim($_POST['pass']), $dbc);
if (empty($email)) {
$errors[] = 'Please enter your e-mail address.';
}
if (empty($pass)) {
$errors[] = 'Please enter your password.';
}
//if all fields filled out and everything is OK
if (empty($errors)) {
//check db for a match
$query = "SELECT user_id, first_name, user_level
FROM the rest of my sql here, blah blah blah";
$result = @mysql_query($query, $dbc)
OR trigger_error("Query: $query\n<br />MySQL Error: " . mysql_error($dbc));
if (@mysql_num_rows($result) == 1) { //a match was made, OK to login
//register the retrieved values into $_SESSION
$_SESSION = mysql_fetch_array($result);
mysql_free_result($result);
mysql_close($dbc);
/*
setcookie('access'); //if "remember me" not checked, session cookie, expires when browser closes
//in FF you must close the tab before quitting/relaunching, otherwise cookie persists
//"remember me" checked?
if(isset($_POST['remember'])){ //expire in 1 hour (3600 = 60 seconds * 60 minutes)
setcookie('access', md5(uniqid(rand())), time()+60); //EXPIRES IN ONE MINUTE FOR TESTING
}
*/
echo '<font color="red">cookie:</font> ' . print_r($_COOKIE) . '<br><br>';
echo '<font color="red">session id:</font> ' . session_id() . '<br>';
echo '<font color="red">session first name:</font> ' . $_SESSION['first_name'] . '<br>';
echo '<font color="red">session user id:</font> ' . $_SESSION['user_id'] . '<br>';
echo '<font color="red">session user level:</font> ' . $_SESSION['user_level'] . '<br><br>';
ob_end_clean();
session_write_close();
$url = BASE_URL . 'loggedin_test2.php';
header("Location: $url");
exit();
} else {
//wrong username/password combo
echo '<div id="errors"><span>Either the e-mail address or password entered is incorrect or you have not activated your account. Please try again.</span></div>';
}
//clear $_POST so the form isn't sticky
$_POST = array();
} else {
//report the errors
echo '<div id="errors"><span>The following error(s) occurred:</span>';
echo '<ul>';
foreach($errors as $error) {
echo "<li>$error</li>";
}
echo '</ul></div>';
}
} // end isset($_POST['login'])
如果我在登录页面上注释掉标题重定向,我可以用数据库中的正确信息回显$ _SESSION变量.但是,一旦重定向到登录页面,它们就会被取消/取消设置.
有人有主意吗？我几乎整天都花在这上面,不能说我更接近于弄清楚它.
顺便说一下,我最近做了两个简单的测试页面,一个开始一个会话,在它上面设置一些变量,有一个表单提交,重定向到第二个页面,除了读取/输出会话变量之外什么也没做.这一切似乎都很好,我只是在我的主应用程序中遇到问题.
我session_start()在您的登录脚本中没有看到.如果你没有开始会话我不认为php会保存你放在$_SESSION数组中的任何数据.同样为了安全起见,我明确地将变量放入$_SESSION数组中,而不是仅仅覆盖整个事物$_SESSION = mysql_fetch_array($result);.