这个问题在这里已经有答案了:
引用-这个错误在php中是什么意思(36个答案)
两年前关门了。
我想登录系统。在用户插入用户名和密码后,他/她会被重定向到index.php,但是进程脚本有问题。
Notice: Undefined variable: conn in C:\xampp\htdocs\file\login.php on line 15
Fatal error: Call to a member function query() on null in C:\xampp\htdocs\file\login.php on line 15
下面是剧本:
<?php
include('connection.php');
session_start();
if ( ! empty($_SESSION['username'] ) ) {
header('Location:index.html?');
exit;
}
if(isset($_POST["login"])) //FUNGSI LOGIN
{
$username = $_POST["username"];
$password = $_POST["password"];
$sql_login = "SELECT * FROM tbl_user WHERE username='$username' AND password='$password'";
$result_login = $conn->query($sql_login);
$row_login = $result_login->fetch_assoc();
$numrow_login = $result_login->num_rows;
if($numrow_login==1)
{
$_SESSION['username'] = $username;
header('Location:index.html?');
exit;
}
}
?>
1条答案
按热度按时间wfveoks01#
Fatal error: Call to a member function query() on null in C:\xampp\htdocs\puskesmas\login.php on line 15
这行告诉您$conn没有定义尝试
$conn = new connection()