Question

我收到了这个错误：

（！）致命错误：在第427行的C：\ wamp64 \ www \ 01 \ Script \ u07 \ user \ Campaigns.php中调用null上的成员函数rowCount（）

我正在使用此代码。谁能指出我在哪里错了？

<?php
$db_host = 'localhost'; // Server Name
$db_user = 'root'; // Username
$db_pass = 'PAss'; // Password
$db_name = 'DB name'; // Database Name

$conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);
if (!$conn) {
die('Failed to connect to MySQL: ' . mysqli_connect_error());
}



$sql = "SELECT name,name2,estado,userId,id FROM links WHERE userId ='" . 
$_SESSION["user"] . "'";

$query = mysqli_query($conn, $sql);
if($stmt->rowCount() > 0) {
while($row=$stmt->fetch(PDO::FETCH_ASSOC)) {

 if (!$query) {
die('SQL Error: ' . mysqli_error($conn));
 }
 ?>

 <div class="row">
      <div class="col-md-12">
        <div class="card">
          <div class="card-body">
            <table class="table table-hover table-bordered" 
    id="sampleTable">
              <thead>
                <tr>
                  <th>Name</th>
                  <th>Position</th>
                  <th>Office</th>
                  <th>Age</th>
                  <th>Start date</th>
                  <th>Salary</th>
                </tr>
              </thead>
              <tbody>
                <?php

   while ($row = mysqli_fetch_array($query)) {
     $amount = $row['amount'] == 0 ? '' : number_format($row['amount']);
   echo '<tr>
                <td>' . $row['id'] . '</td>
                <td>' . $row['name'] . '</td>
                <td>0/' . $row['name2'] . '</td>





                <td><span class="label label-success">' . $row['estado'] . 
     '</span></td>

                <td><a class="btn btn-sm btn-danger" id="delete_product" 
      data-id="<?php echo $id; ?>" href="javascript:void(0)"><i 
            class="glyphicon glyphicon-trash"></i></a>
                <a class="btn btn-sm btn-danger" id="delete_product" data-
        id="' . $row['id'] . '" href="javascript:void(0)"><i 
     class="glyphicon glyphicon-trash"></i></a>
                <td><a class="btn btn-sm btn-danger" id="delete_product" 
            data-id="<?php echo $id; ?>" href="javascript:void(0)"><i 
           class="fa fa-trash-o"></i></a></td>
                </td>
            </tr>';
                   }
          ?>

            <?php
            }   

        } else {

            ?>
            <tr>
            <td colspan="3">No Products Found</td>
            </tr>
            <?php

        }
        ?>
              </tbody>
            </table>



          </div>
        </div>
      </div>
    </div>

Answer 1

$stmt似乎未在您的代码中定义。

致命错误：在null中调用成员函数rowCount（）

1 个答案: