Question

我在解决这个问题时遇到了很大的问题，我对php不是很熟悉。我没有看到代码中遗漏任何问题。我已经搜索过了很长一段时间。但是，它只是不断地从一个问题转变为另一个问题。出现的错误看起来像这样，

未定义变量：第19行/home2/abdi/public_html/phpinfo.php/login files / login.php中的密码

这是实际代码

<?php  error_reporting(E_ALL); ini_set('display_errors', 1);  session_start(); //connect to database $db=mysqli_connect("localhost","abdi_yae","abdi_yae123","abdi_ya");   if(isset($_POST['login_btn']))  {     addslashes(trim($_POST['username']));     addslashes(trim($_POST['password']));     //$username=mysqli_real_escape_string($_POST['username']);    // $password=mysqli_real_escape_string($_POST['password']);             $password=md5($password); //Remember we hashed password before storing last time     $sql="SELECT * FROM users WHERE username='$username' AND password='$password'";          $result=mysqli_query($db,$sql);     if(mysqli_num_rows($result)==1)                         {        $_SESSION['message']="You are now Logged In";        $_SESSION['username']= $username;         header("location:home.php");     }    else    {                $_SESSION['message']="Username and Password combiation incorrect";     } } ?>

Answer 1

您需要为此设置密码变量。

var inc = {$inc: {}};
inc.$inc['inventory.'+itemName+"."+statName] = 1; // itemName and statName are variables created by  user

userDoc.update({"userId": userId}, inc);

Answer 2

<?php  error_reporting(E_ALL);
ini_set('display_errors', 1);
session_start(); //connect to database   
$db=mysqli_connect("localhost","abdi_yae","abdi_yae123","abdi_ya");
if(isset($_POST['login_btn']))  {
$username = addslashes(trim($_POST['username']));  
//addslashes(trim($_POST['password']));    
//$username=mysqli_real_escape_string($_POST['username']);    
// $password=mysqli_real_escape_string($_POST['password']);
$password=md5($_POST['password']); //Remember we hashed password before storing last time 
$sql="SELECT * FROM users WHERE username='$username' AND password='$password'";
$result=mysqli_query($db,$sql);
if(mysqli_num_rows($result)==1)
    {
        $_SESSION['message']="You are now Logged In";
        $_SESSION['username']= $username;
        header("location:home.php");
    }
    else
    {   
        $_SESSION['message']="Username and Password combiation incorrect";
    } 
} 
?>

立即检查好友。它完成了

erro在运行此代码时，查找没有做任何事情

2 个答案: