mysqli的查詢沒有給予正確的信息

Question

我做了這個腳本：

$username = $_POST["username"]; 
$password = sha1($_POST["password"]); 
$checkuser_query = mysqli_query($con,"SELECT * FROM users WHERE username='$username' AND password='$password'"); 
$checkuser = mysqli_num_rows($checkuser_query); 
$checkactive_query = mysqli_query($con,"SELECT * FROM users WHERE username='$username' AND verified='0'"); 
$checkactive = mysqli_num_rows($checkactive_query); 
$checkbanned_query = mysqli_query($con,"SELECT * FROM users WHERE username='$username' AND closed='1'"); 
$checkbanned = mysqli_num_rows($checkactive_query); 
if(empty($_POST["username"]) || empty($_POST["password"])) { 
    header("Location: http://empirebattles.co.uk/Login?alert=nofilled"); 
} 
elseif($checkuser<= 0) { 
    header("location: http://empirebattles.co.uk/Login?alert=loginfailed"); 
} 
elseif($checkactive==1) { 
    header("location: http://empirebattles.co.uk/Login?alert=unverified"); 
} 
elseif($checkbanned==1) { 
    header("location: http://empirebattles.co.uk/Login?alert=banned"); 
}  
else { 
    header("Location: http://empirebattles.co.uk/Home"); 
    setcookie("EmpireBattles",$username,time() + (10 * 365 * 24 * 60 * 60),"/"); 
    mysqli_query($con,"UPDATE users SET online = '1' WHERE username = '$username'"); 
} 

而且，它的工作原理。直到它被重定向的地步，如果你被禁止。即使你被禁止，它也會跳過它。

我看了一下，用它搜索了一下，甚至問我的老師，誰也看不出有什麼問題。

請看看， 湯姆。

Answer 1

嘗試修改此行：

$checkbanned = mysqli_num_rows($checkactive_query); 

到

$checkbanned = mysqli_num_rows($checkbanned_query);