sizeof（）：参数必须是数组或对象

Question

我有这个错误可以有人帮助我。

这是我的代码：

function getMenu($parentId = 0)
{

    $sql = "select * from tbl_category where parent=?";
    $result = $this->doSelect($sql, array($parentId));
    foreach ($result as $row) {

        $children = $this->getMenu($row['id']);
       if (sizeof ($children) > 0) {
            $row['children'] = $children;
        }
        @$data[] = $row;

    }

    return @$data;

}

这是我的错误

  

警告：sizeof（）：参数必须是数组或对象   在C：\ xampp \ htdocs \ digikalamvc \ core \ model.php中实现Countable   第302行

Answer 1

请更新条件，例如我更新了以下代码。我希望它对你有所帮助。

function getMenu($parentId = 0)
{

    $sql = "select * from tbl_category where parent=?";
    $result = $this->doSelect($sql, array($parentId));
    foreach ($result as $row) {

        $children = $this->getMenu($row['id']);
       if (!empty($children) && sizeof ($children) > 0) {
            $row['children'] = $children;
        }
        @$data[] = $row;

    }

    return @$data;

}