PHP Session在index.php上不存在
[英]PHP Session doesn't exist on index.php
問題描述
我在index.php上檢查用戶會話時收到此錯誤。 用戶登錄后，我想在菜單中顯示“注銷”按鈕。 這是代碼：
session.php
<?php
include('config.php');
session_start();
$user_check = $_SESSION['login_user'];
$ses_sql = mysqli_query($db,"select username from users where username = '$user_check' ");
$row = mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);
$login_session = $row['username'];
?>
index.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<?php
include('session.php');
?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="/css/main.css" />
<title>LVRP</title>
</head>
<body>
<div id="top-line"></div>
<div id="header">
<div class="wrapper">
<div class="logo"> </div>
</div>
</div>
<div id="menu">
<div class="wrapper">
<ul id="navigation">
<li><a class="active" href="index.php">Home</a></li>
<li><a class="inactive" href="/forum" target="_blank">Forums</a></li>
<li><a class="inactive" href="ucp.php">User Control Panel</a></li>
<?php if(isset($_SESSION['login_user'])){echo('<li><a class="inactive" href="logout.php">Log out</a></li>');} ?>
</ul>
</div>
</div>
<div id="content">
</div>
</body>
</html>
它返回注意：未定義的索引： index.php的第5行上的/var/www/html/session.php中的login_user
2 個解決方案
解決方案1
1 已采納 2016-04-06 15:58:54
“它死於空白頁。”
使用以下方式啟用錯誤
ini_set('display_errors', 'On');
在頁面頂部的PHP標記中，並發布錯誤。
解決方案2
1 2016-04-06 16:19:18
請嘗試以下更正：
<?php
include("config.php");
session_start();
if($_SERVER["REQUEST_METHOD"] == "POST") {
// username and password sent from form
$myusername = mysqli_real_escape_string($db,$_POST['username']);
$mypassword = mysqli_real_escape_string($db,$_POST['password']);
$sql = "SELECT ID FROM users WHERE username = '$myusername' and password = '$mypassword'";
$result = mysqli_query($db,$sql);
$row = mysqli_fetch_array($result,MYSQLI_ASSOC);
//$active = $row['active'];
$active = $row['ID'];
$count = mysqli_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count == 1) {
// This function has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0. (From: http://php.net/manual/en/function.session-register.php)
//session_register("myusername");
$_SESSION['login_user'] = $myusername;
header("location: ucp.php");
}else {
$error = "Wrong username/password.";
echo "<pre>";var_dump($error);exit();
}
}
?>
PHP-index.php和會話
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