SQLSTATE [HY000]：常规错误：1210个不正确的参数mysqld_stmt_execute

Question

下面的代码是给我一个共享的主机对这个错误在没有价值的看表DB

$query = "SELECT COUNT(*) FROM viewed WHERE memberID = :memberID"; 
     $stmt = $db->prepare($query); 
     $stmt->bindParam(':memberID', $uid, PDO::PARAM_INT); 
     $stmt->execute(); 
     $total = $stmt->fetchColumn();  

$pages = ceil($total/$per_page); 

$page = min($pages, filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, array(
'options' => array(
'default' => 1, 
'min_range' => 1, 
), 
))); 

$offset = ($page - 1) * $per_page; 

$query = "SELECT * FROM viewed WHERE memberID = :memberID ORDER BY id DESC LIMIT :per_page OFFSET :offset"; 

     $stmt = $db->prepare($query); 
     $stmt->bindParam(':per_page', $per_page, PDO::PARAM_INT); 
     $stmt->bindParam(':offset', $offset, PDO::PARAM_INT); 
     $stmt->bindParam(':memberID', $uid, PDO::PARAM_INT); 
     $stmt->execute(); 

$result = $stmt->fetchAll(); 

，但是，我的配置文件是我删除

$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

那么错误，但没有消失PDO :: ATTR_ERRMODE，PDO :: ERRMODE_EXCEPTION我怎么知道错误？

谢谢

Answer 1

发生这种情况是因为您不需要绑定限制和偏移量中的变量。您应该只使用绑定在where条件。您可以直接查询。请看下图：

$query = "SELECT * FROM viewed WHERE memberID = :memberID ORDER BY id DESC LIMIT $per_page OFFSET $offset"; 

     $stmt = $db->prepare($query); 
     $stmt->bindParam(':memberID', $uid, PDO::PARAM_INT); 

Answer 2

我可能是错的，但我认为，问题是，你使用：在bindParam呼叫“成员”。参数名称是“memberID”。

$query = "SELECT * FROM viewed WHERE memberID = :memberID ORDER BY id DESC LIMIT $per_page OFFSET $offset"; 

    $stmt = $db->prepare($query); 
    $stmt->bindParam('memberID', $uid, PDO::PARAM_INT);