表单不更新数据库中的信息

Question

我有以下代码，它应该在某些条件下更新数据库中的信息：

如果设置了密码，请执行更新1，否则请执行更新2.

提交按钮似乎工作，我试图在提交后回显数据，一切都没问题。我为第一次更新放了一个echo测试，似乎打印测试（但是它没有在sql server中更新）。我在第二次更新中尝试了相同的内容，没有打印出来。

我做错了什么？谢谢。

function check_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}



//if form has been submitted process it
if(isset($_POST['update'])){

$id = check_input($_POST['id']);
$username = check_input($_POST['username']);
$password = check_input($_POST['password']);
$passwordConfirm = check_input($_POST['passwordConfirm']);
$email = check_input($_POST['email']);
$activity = isset($_POST['activity']) ? 1 : 0;


    //basic validation
    if($username ==''){
        $error[] = 'Trebuie introdus un nume.';
    }

    if( strlen($password) > 0){

        if($password ==''){
            $error[] = 'Trebuie introdusa o parola.';
        }

        if($passwordConfirm ==''){
            $error[] = 'Trebuie introdusa o parola de confirmare.';
        }

        if($password != $passwordConfirm){
            $error[] = 'Parolele nu se potrivesc.';
        }

    }


    if($email ==''){
        $error[] = 'Trebuie introdusa o adresa de email.';
    }

    if(!isset($error)){

        try {

            if(isset($password)){

                $hashedpassword = $user->password_hash($password, PASSWORD_BCRYPT);

                //update database
                $stmt = $handler->prepare('UPDATE users SET name = :username, password = :password, email = :email, activity = :activity WHERE id = :id') ;
                $stmt->execute(array(
                    ':username' => $username,
                    ':password' => $hashedpassword,
                    ':email' => $email,
                    ':id' => $id,
                    ':activity' => $activity
                ));

            } else {

                //update database
                $stmt = $handler->prepare('UPDATE users SET name = :username, email = :email, activity = :activity WHERE id = :id') ;
                $stmt->execute(array(
                    ':username' => $username,
                    ':email' => $email,
                    ':id' => $id,
                    ':activity' => $activity
                ));



            }


            //redirect to index page
            //header('Location: userlist.php?action=updated');
            //exit;

        } catch(PDOException $e) {
            echo $e->getMessage();
        }

    }

}

?>




<?php
if(isset($error)){
    foreach($error as $error){
        echo $error.'<br />';
    }
}

    try {

        $stmt2 = $handler->prepare('SELECT id, name, email, activity FROM users WHERE id = :id') ;
        $stmt2->execute(array(':id' => $_GET['id']));
        $row = $stmt2->fetch(); 

    } catch(PDOException $e) {
        echo $e->getMessage();
    }
?>







<form class="form-horizontal" action="" method="post">
<fieldset>

<legend><span style="margin-left:50px">Actualizare informatii utilizator</span></legend>


<div class="form-group">
  <label class="col-md-4 control-label" for="textinput">Nume utilizator</label>  
  <div class="col-md-4">
  <input id="textinput" name="username" value='<?php echo $row['name']; ?>' class="form-control input-md" type="text">

  </div>
</div>


<div class="form-group">
  <label class="col-md-4 control-label" for="textinput">Parola</label>  
  <div class="col-md-4">
  <input id="textinput" name="password"  class="form-control input-md" type="password">

  </div>
</div>


<div class="form-group">
  <label class="col-md-4 control-label" for="textinput">Confirma parola</label>  
  <div class="col-md-4">
  <input id="textinput" name="passwordConfirm"  class="form-control input-md" type="password">

  </div>
</div>


<div class="form-group">
  <label class="col-md-4 control-label" for="textinput">Adresa email</label>  
  <div class="col-md-4">
  <input id="textinput" name="email" value="<?php echo $row['email']; ?>" class="form-control input-md" type="email">

  </div>
</div>


<div class="form-group">
  <label class="col-md-4 control-label" for="radios">Activitate utilizator</label>
  <div class="col-md-4"> 
    <label class="radio-inline" for="radios-0">
      <input name="activity"  <?php  if ($row['activity'] == 1) { echo 'checked="checked"';}  ?>  type="checkbox">
    </label> 
  </div>
</div>

<div class="form-group">
  <label class="col-md-4 control-label" for="send"></label>
  <div class="col-md-4">
    <input type="submit" name="update" value="Trimite" class="btn btn-primary">
  </div>
</div>


</fieldset>
</form>