Question

我正在使用Opencart v2.2.0，我的php脚本出现问题。有问题的一行是：

        $stmt2->bind_param('sssssisi', $name, $description, $meta_description, $meta_keyword, $tag, $modified_by, $product_id, $language_id);

包括上述行的整个功能如下：

function restoreBackup()
{
    global $mysqli;

    $i               = 0;
    $getpic          = "SELECT * FROM oc_product_backup LIMIT 0, 100000";
    $backup          = $mysqli->query($getpic);

    $mysqli->autocommit(FALSE); 
    $updateproduct_sql     = "UPDATE oc_product SET image = ?, ean = ?, model = ?, status = ?, price_sync = ?, modified_by = ?, date_modified = ? WHERE product_id= ?";
    $updatedescription_sql = "UPDATE oc_product_description SET name = ?, description = ?, meta_description = ?, meta_keyword = ?, tag = ?, modified_by = ? WHERE product_id = ? AND language_id = ?";

    $stmt = $mysqli->prepare($updateproduct_sql);
    $stmt->bind_param('sssiiiss', $image, $ean, $model, $status, $price_sync, $modified_by, $date_modified, $product_id);

    $stmt2 = $mysqli->prepare($updatedescription_sql);
    $stmt2->bind_param('sssssisi', $name, $description, $meta_description, $meta_keyword, $tag, $modified_by, $product_id, $language_id);

    while($row = $backup->fetch_array(MYSQLI_ASSOC))
    {

        //$name              = removeslashes($row['name']);
        $name              = $row['name'];
        //$description       = removeslashes($row['description']);
        $description       = $row['description'];
        $meta_description  = $row['meta_description'];
        $meta_keyword      = $row['meta_keyword'];
        $tag               = $row['tag'];
        $product_id        = $row['product_id'];
        $modified_by       = $row['modified_by']; 
        $language_id       = $row['language_id'];
        if($row['language_id'] == 4)
        {
            $image          = $row['image'];
            $ean            = $row['ean'];
            $name           = $row['name'];
            $model          = $row['model'];
            $status         = $row['status'];
            $price_sync     = $row['price_sync'];
            $date_modified  = $row['date_modified']; 
            if(!$stmt->execute())
                return false;

        }
        if(!$stmt2->execute())
            return false;

        $i++;
        if(($i % 500) === 0) $mysqli->commit();
    }
    $mysqli->commit();
    $backup->close();
    return true;
}

function removeslashes($string)
{
    $string=implode("",explode("\\",$string));
    return stripslashes(trim($string));
}

我得到的错误是

致命错误：在
中的布尔值上调用成员函数bind_param（）

有什么建议吗？我不知道我做错了什么。提前谢谢大家。

Answer 1

prepare（）方法可以返回false，你应该检查它。至于为什么它返回false，表名或列名（在SELECT，UPDATE或WHERE子句中）可能不正确？

另外，请考虑使用$ query-＆gt; error_list之类的内容来检查解析SQL时发生的错误。（我偶尔会回复实际的SQL语句字符串并粘贴到phpMyAdmin进行测试，但肯定会有一些失败。）

我的PHP脚本中的致命错误

1 个答案: