PHP Crud更新选择显示重复

Question

我有一个PHP Crud系统。创建新记录时的选项之一是具有两个选项的选择框。 Netman和管理员。当我更新记录时，我看到选项，但它重复，并有另一个选项， 像这样。我不知道如何显示数据库和其他选项的记录。这可能吗？

<?php 
    include "config.php"; 
    include "header.php"; 
    if(isset($_GET['u'])): 
    if(isset($_POST['bts'])): 
    $stmt = $mysqli->prepare("UPDATE passwordtable SET school=?,usertype=?, password=?, notes=? WHERE id_personal=?"); 
    $stmt->bind_param('sssss', $nm, $gd, $tl, $ar, $id); 

    $nm = $_POST['nm']; 
    $gd = $_POST['gd']; 
    $tl = $_POST['tl']; 
    $ar = $_POST['ar']; 
    $id = $_POST['id']; 

    if($stmt->execute()): 
    echo "<script>location.href='index.php'</script>"; 
    else: 
    echo "<script>alert('".$stmt->error."')</script>"; 
    endif; 
    endif; 
    $res = $mysqli->query("SELECT * FROM passwordtable WHERE id_personal=".$_GET['u']); 
    $row = $res->fetch_assoc(); 
    ?> 

和选择框代码我们

<label for="gd">User Type</label> 
    <select class="form-control" id="gd" name="gd"> 
    <option><?php echo $row['usertype'] ?></option> 
    <option>Administrator</option> 
    <option>NetMan</option> 
    </select> 

Answer 1

如果仍然没有找到答案，请有看看下面的代码

<?php 
    $usertypes = array('Administrator' => 'Administrator', 'NetMan' => 'NetMan'); 
    $selcted_usertype = !empty($row['usertype']) ? $row['usertype'] : ""; 
    ?> 
    <label for="gd">User Type</label> 
    <select class="form-control" id="gd" name="gd"> 
     <?php 
     foreach ($usertypes as $user_type_val => $usertype_txt) { 
      $selected = ($user_type_val == $selcted_usertype) ? "selected='selected'" : ""; 
      ?> 
      <option <?php echo $selected; ?> value="<?php echo $user_type_val; ?>"><?php echo $usertype_txt; ?></option> 
     <?php } 
     ?> 

    </select> 

您将需要价值为属性选项。