爲什麼我的代碼總是返回「錯誤的用戶名和密碼」？

Question

很抱歉，如果這是一個常見問題，但我很難過。

<?php 
session_start(); 
unset($_SESSION['logerror']); 

$host="localhost"; // Host name 
$db_name="website_database.sqlite"; // Database name 
$tbl_name="User"; // Table name 

$con= sqlite_open("Website_Database.sqlite"); 

// username and password sent from form 
$username=$_POST['Username']; 
$password=$_POST['Password']; 


$sql="SELECT * FROM ".$tbl_name." WHERE Username='".$username."' and Password='".$password."'"; 
$result= sqlite_query($con,$sql); 

// Mysql_num_row is counting table row 
$count= sqlite_num_rows($result); 

// If result matched $username and $password, table row must be 1 row 


if($count==1){ 

// Register username, $password and redirect to file "login_success.php" 
session_register("username"); 
session_register("password"); 
echo "Login Successful"; 
} 
else { 
echo "does this work nikhil"; 
} 
?> 

我正在使用SQLite，它運行的是USB。該文件是website_database.sqlite

表是用戶。內的數據是用戶名：000001和密碼：password

POST數據從先前的形式來爲這個

<form action="checklogin.php" method="post"> 
     <div class="wrap"> <!--make a container that will have all our elements and will be the main stucture of you pages--> 
      <div class="logo"></div><!--The logo container--> 
      <div class="header_text">Room Booking</div><!--The main header of the fomr--> 
      <div class="logins_details_container"><!--The top container--> 
       <table class="fields_container"> <!--A simple 2x2 table for the form. We choose to use table as for this simple kind of stuff helps us to be everything well stuctured and putting less attributes at the css--> 
        <tr> 
         <td><span>Username</span></td> 
         <td><input class="field" id="Username" name="Username" value="" placeholder="" type="text" /></td> 
        </tr> 
        <tr> 
         <td><span>Password</span></td> 
         <td><input class="field" id="Password" type="Password" name="Password" value="" placeholder="" /></td> 
        </tr> 
       </table> 
       <div class="remeber_me_container"><!--A container for the Remember me text and the checkbox--> 
        <div class="remember_me">Remember Me?</div> 
        <input id="remeber_me" name="" value="" type="checkbox" /> 
       </div> 
       <div class="login_btn"><!-- The login button--> 
        <input name="login_btn" value="Login" type="submit" /> 
       </div> 
      </div> 
    <form/><!-- End of the logins_details_container --> 

Answer 1

在表單中的密碼輸入字段的名稱屬性爲空。我想你會想這樣的：

<td><input class="field" id="Password" type="Password" name="Password" value="" placeholder="" /></td> 

Answer 2

我只是張貼這是一個臨時的答案，因爲它太多的評論。

無論出於何種原因，您當前的代碼似乎沒有發佈密碼值，所以讓我們試着用一些非常簡單的代碼縮小它的範圍。用你的代碼替換checklogin.php中的所有代碼並將其燒掉。輸入一個用戶並通過，點擊提交，讓我知道print_r的結果是什麼。

if ($_SERVER['REQUEST_METHOD'] != 'POST') { 
    echo '<form action="checklogin.php" method="post"> 
    <input name="Username"><br> 
    <input type="Password" name="Password"><br> 
    <input value="Login" type="submit"> 
    </form> 
    '; 
}else{ 
    print_r($_POST); 
} 

如果它返回一個用戶名和密碼，與其他的PHP代碼替換print_r($_POST);，看看是否登錄作品。再次，發佈結果...

我能看到的唯一事情是缺少在HTML </div>和不正確的</form>關閉標籤。你也錯過remember_me幾次。

<form action="checklogin.php" method="post"> 
    <div class="wrap"> <!--make a container that will have all our elements and will be the main stucture of you pages--> 
     <div class="logo"></div><!--The logo container--> 
     <div class="header_text">Room Booking</div><!--The main header of the fomr--> 
     <div class="logins_details_container"><!--The top container--> 
      <table class="fields_container"> <!--A simple 2x2 table for the form. We choose to use table as for this simple kind of stuff helps us to be everything well stuctured and putting less attributes at the css--> 
       <tr> 
        <td><span>Username</span></td> 
        <td><input class="field" id="Username" name="Username" value="" placeholder="" type="text" /></td> 
       </tr> 
       <tr> 
        <td><span>Password</span></td> 
        <td><input class="field" id="Password" type="Password" name="Password" value="" placeholder="" /></td> 
       </tr> 
      </table> 
      <div class="remember_me_container"><!--A container for the Remember me text and the checkbox--> 
       <div class="remember_me">Remember Me?</div> 
       <input id="remember_me" name="" value="" type="checkbox" /> 
      </div> 
      <div class="login_btn"><!-- The login button--> 
       <input name="login_btn" value="Login" type="submit" /> 
      </div> 
     </div> 
    </div><!-- THIS ONE!--> 
</form><!-- NOT <form/>!-->