代码控制php会话
代码运行一直提示我第23行有错误
session_start();//开始会话
if (isset($_POST['userid'])&&isset($_POST['password']))
{//使用者尝试登录
$userid=$_POST['userid'];
$password=$_POST['password'];
$db_conn=new mysqli('localhost','root','','auth');
if(mysqli_connect_errno()){
echo 'Connection to database failed:'.mysqli_connect_error();
exit();
}
$query='select * from authorised_users'
."where name='$userid'"
."and password='$password'";
立即学习“PHP免费学习笔记（深入）”；
$result=$db_conn->query($query);
if ($result->num_rows >0) {
$_SESSION['valid_user']=$userid;
}
$db_conn->close();
}
?>
if(isset($_SESSION['valid_user']))
{
echo 'you are logged in as'.$_SESSION['valid_user'].'
';
echo 'log out
';
}
else
{
if (isset($userid))
{
echo 'Could not log you in.
';
}
else
{
echo 'you are not logged in';
}
echo'
';| Userid: | ';|
| password: | ';|
| '; echo' | |
PHP怎么学习？PHP怎么入门？PHP在哪学？PHP怎么学才快？不用担心，这里为大家提供了PHP速学教程(入门到精通)，有需要的小伙伴保存下载就能学习啦！
广告![ThinkPHP5快速开发企业站点[全程实录]](https://img.php.cn/upload/course/000/000/068/6253d918a3ce7278.png)
收藏
收藏
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号
819
