Question

我有一个HTML页面，我在其中使用Jquery .post()将表单发布到一个大的php文件中。我认为这样我就可以在$_SESSION中保存用户名。我有一个登录表单，用于将用户名存储到会话中，但是当我尝试在不同的html页面中显示php文件（使用.load()）时（通过登录页面链接）我没有会话变量组。当我进行一些调试时，我发现会话只有在页面的if(isset($_POST['username'}))部分创建时才会丢失。

<?php
    session_start();
    include_once("connect.php");
    $username = $_SESSION['username'];

    //check if username is in session
    if(isset($_SESSION['username'])) {
        $username = $_SESSION['username'];
        echo "<script>$(document).ready(function(){location.replace('index.html#home')});</script>";    
    }else{
?>
<div id="part_login">
<?php
    //if not, check login
        if(isset($_POST['username']) and isset($_POST['password'])){
            $username = mysqli_real_escape_string($conn, $_POST['username']);
            $password = md5($_POST['password']);

            $result = mysqli_query($conn, "SELECT * FROM users WHERE username='$username' AND password='$password' AND active='1' LIMIT 1") or die(mysqli_error($conn));
            $count = mysqli_num_rows($result);
            if ($count == 1){
                $_SESSION['username'] = $username;

                $result = mysqli_query($conn, " SELECT * FROM `users` WHERE username = '$username'");
                while($row = mysqli_fetch_array($result)) {
                    $oldlogin = $row['lastlogin'];
                }

                echo "<script>$(document).ready(function(){location.replace('index.html#home')});</script>";
            }else{
                echo "<div class='ui-btn'>Invalid Login Credentials</div>";
            }
        }
    }

        if (isset($_SESSION['username'])){
            $username = $_SESSION['username'];

            $result = mysqli_query($conn, " SELECT * FROM `users` WHERE username = '$username'");
                while($row = mysqli_fetch_array($result)) {
                    $oldlogin = $row['lastlogin'];
                }

            $query = mysqli_query($conn, "UPDATE `users` SET lastlogin=now() WHERE username='$username' LIMIT 1");
        }else{  
        }
?>
</div>
<div id="part_user">
<?
    echo $username . " " . $oldlogin;
?>
</div>

在JQUERY $ .POST上保存$ _SESSION

0 个答案: