PHP的Mysql更新查詢不起作用

Question

我有一個非常愚蠢的問題。在我開始之前，我知道我使用的是不推薦使用的mysql版本，但我還沒有來過學習MySqli或PDO，但我很快就會知道。

我一直在研究整個管理系統，並且已經開始爲管理員創建編輯其他帳戶的功能。我將整個系統放在一個頁面上，我的代碼變得有點混亂（這可能是我得到錯誤的原因）。

那麼我現在就從我的問題開始：我有一個更新查詢，但它似乎並沒有工作。我的形式如下：

<form action="" method="post"> 
    <table class="table table-profile"> 
     <thead> 
      <tr> 
       <th colspan="2"> 
        <h4><?php echo $username; ?> <small><?php echo $fullname; ?></small></h4> 
       </th> 
      </tr> 
     </thead> 
     <tbody> 
      <tr> 
       <td colspan="2"><input type="hidden" name="id" value="<?php echo $id; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="field">Username</td> 
       <td><input type="text" class="form-control input-xs" name="username" placeholder="" value="<?php echo $username; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="field">Password</td> 
       <td><a href="#">Password Resets must be done through James/Hamish/Cryptic</a></td> 
      </tr> 
      <tr> 
       <td class="field">Full name</td> 
       <td><input type="text" class="form-control input-xs" name="fullname" placeholder="" value="<?php echo $fullname; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="field">Email</td> 
       <td><input type="text" class="form-control input-xs" name="email" placeholder="" value="<?php echo $email; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="divider" colspan="2"></td> 
      </tr> 
      <tr> 
       <td class="field">Membership</td> 
       <td> 
        <select class="form-control input-inline input-xs" name="membership"> 
         <option value="Administrator"<?php if($membership == 'Administrator') { echo ' selected'; } ?>>Administrator</option> 
         <option value="Moderator"<?php if($membership == 'Moderator') { echo ' selected'; } ?>>Moderator</option> 
         <option value="Supporter"<?php if($membership == 'Supporter') { echo ' selected'; } ?>>Supporter</option> 
         <option value="PM|T"<?php if($membership == 'PM|T') { echo ' selected'; } ?>>Platinum Modding Team</option> 
         <option value="Paid"<?php if($membership == 'Paid') { echo ' selected'; } ?>>Paid User</option> 
         <option value="Free"<?php if($membership == 'Free') { echo ' selected'; } ?>>Free User</option> 
         <option value="None"<?php if($membership == 'None') { echo ' selected'; } ?>>None</option> 
        </select> 
       </td> 
      </tr> 
      <tr> 
       <td class="field">Plan Desription</td> 
       <td><input type="text" class="form-control input-xs" name="membership_type" placeholder="Membership Type" value="<?php echo $membership_type; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="field">MaxTime</td> 
       <td> 
        <select class="form-control input-inline input-xs" name="membership_maxtime"> 
         <option value="600"<?php if($membership_maxtime == '600') { echo ' selected'; } ?>>600 Seconds</option> 
         <option value="1800"<?php if($membership_maxtime == '1800') { echo ' selected'; } ?>>1800 Seconds</option> 
         <option value="3600"<?php if($membership_maxtime == '3600') { echo ' selected'; } ?>>3600 Seconds</option> 
         <option value="7200"<?php if($membership_maxtime == '7200') { echo ' selected'; } ?>>7200 Seconds</option> 
         <option value="4147200"<?php if($membership_maxtime == '4147200') { echo ' selected'; } ?>>4147200 Seconds</option> 
        </select> 
       </td> 
      </tr> 
      <tr> 
       <td class="field">Concurrents</td> 
       <td> 
        <select class="form-control input-inline input-xs" name="membership_concurrents"> 
         <option value="1"<?php if($membership_concurrents == '1') { echo ' selected'; } ?>>1 Concurrent</option> 
         <option value="2"<?php if($membership_concurrents == '2') { echo ' selected'; } ?>>2 Concurrents</option> 
         <option value="3"<?php if($membership_concurrents == '3') { echo ' selected'; } ?>>3 Concurrents</option> 
         <option value="4"<?php if($membership_concurrents == '4') { echo ' selected'; } ?>>4 Concurrents</option> 
         <option value="4147200"<?php if($membership_concurrents == '4147200') { echo ' selected'; } ?>>4147200 Concurrents</option> 
        </select> 
       </td> 
      </tr> 
      <tr> 
       <td class="field">Expiration</td> 
       <td><input type="text" class="form-control input-xs" name="membership_expiration" placeholder="Membership Expiration: (format: yyyy-mm-dd)" value="<?php echo $membership_expiration; ?>" /></td> 
      </tr> 
      <tr> 
       <td class="divider" colspan="2"></td> 
      </tr> 
      <tr> 
       <td class="field">IP Address</td> 
       <td><a href="http://whatismyipaddress.com/ip/<?php echo $location_ip; ?>" target="new"><?php echo $location_ip; ?></td> 
      </tr> 
      <tr> 
       <td class="divider" colspan="2"></td> 
      </tr> 
      <tr> 
       <td class="field">Warning</td> 
       <td> 
        <select class="form-control input-inline input-xs" name="warning"> 
         <option value="0"<?php if($warning == '0') { echo ' selected'; } ?>>Level 0 - No warning</option> 
         <option value="1"<?php if($warning == '1') { echo ' selected'; } ?>>Level 1 - First Offence</option> 
         <option value="2"<?php if($warning == '2') { echo ' selected'; } ?>>Level 2 - Strong Warning</option> 
         <option value="3"<?php if($warning == '3') { echo ' selected'; } ?>>Level 3 - Last Chance</option> 
        </select> 
       </td> 
      </tr> 
      <tr> 
       <td class="field">Warning Note</td> 
       <td><textarea class="form-control" rows="4" name="warning_note" placeholder="The warning note will be displayed after a level 1 warning."><?php echo $warning_note; ?></textarea></td> 
      </tr> 
      <tr> 
       <td class="divider" colspan="2"></td> 
      </tr> 
      <tr<?php if ($banned == 'true') { echo ' class="danger"'; } ?>> 
       <td class="field"><i class="fa fa-ban"></i> Banned</td> 
       <td> 
        <label class="radio-inline"> 
         <input type="radio" name="banned" value="false"<?php if ($banned == 'false') { echo ' checked'; } ?> /> 
         False 
        </label> 
        <label class="radio-inline"> 
         <input type="radio" name="banned" value="true"<?php if ($banned == 'true') { echo ' checked'; } ?> /> 
         True 
        </label> 
       </td> 
      </tr> 
      <tr<?php if ($banned == 'true') { echo ' class="danger"'; } ?>> 
       <td class="field">Banned Reason</td> 
       <td><textarea class="form-control" rows="4" name="banned_note" placeholder="Reason for account ban. (If the account is banned)"><?php echo $banned_note; ?></textarea></td> 
      </tr> 
      <tr> 
       <td class="divider" colspan="2"></td> 
      </tr> 
      <tr> 
       <td class="field">Acc Created</td> 
       <td><?php echo $created; ?></td> 
      </tr> 
     </tbody> 
     <tfoot> 
      <tr> 
       <td colspan="2"> 
        <button type="submit" name="uploadAccount" class="btn btn-success"><i class="fa fa-upload"></i> Upload new changes</button> 
        <button type="reset" class="btn btn-warning"><i class="fa fa-refresh"></i> Reset Fields</button> 
       </td> 
      </tr> 
     </tfoot> 
    </table> 
</form> 

和我的代碼更新數據庫如下：

if (isset($_REQUEST['uploadAccount'])) { 
    $id = $POST['id']; 
    $username = $_POST['username']; 
    $fullname = $_POST['fullname']; 
    $email = $_POST['email']; 

    $membership = $_POST['membership']; 
    $membership_type = $_POST['membership_type']; 
    $membership_maxtime = $_POST['membership_maxtime']; 
    $membership_concurrents = $_POST['membership_concurrents']; 
    $membership_expiration = $_POST['membership_expiration']; 

    $warning = $_POST['warning']; 
    $warning_note = $_POST['warning_note']; 

    $banned = $_POST['banned']; 
    $banned_note = $_POST['banned_note']; 

    $account_update = mysql_query("UPDATE members SET username='$username', fullname='$fullname', email='$email', membership='$membership', membership_type='$membership_type', membership_maxtime='$membership_maxtime', membership_concurrents='$membership_concurrents', membership_expiration='$membership_expiration', warning='$warning', warning_note='$warning_note', banned='$banned', banned_note='$banned_note' WHERE id='$id'", $con); 

    header('location: dashboard.php?admin&accounts&success=Account, '.$username.' successfully updated'); 
} else { } 

，如果你讓我知道我在做什麼錯了，我將非常感激。預先感謝那些做的人。

Answer 1

問題是$id未被識別。我將查詢中的WHERE子句更改爲$username，並解決了問題。

謝謝大家誰幫助。

Answer 2

不要使用已棄用的mysql_ *使用PDO。

在這裏你有一個例子。

$pdo = new PDO ($server, $user, $password); 
$query = 'UPDATE members SET username= :username, fullname= :fullname'; 
$stmt = $pdo -> prepare($query); 
$stmt->bindParam(":username", $username, PDO::PARAM_STR); 
$stmt->bindParam(":fullname", $fullname, PDO::PARAM_STR); 
$stmt->execute(); 

通過PDO，您可以將您的參數綁定到查詢。