Question

我在使用对象从数组中删除项目时遇到问题，在其他应用程序中运行相同的代码。循环后，数组$categories应为空。如果用户将第二个参数传递为TRUE，如果父母没有孩子，则删除所有子类别，然后删除父类别，然后删除父类别。

//the $id of the category to be removed 
// $remove_children is state if you accept removing children categories  
function remove_category($id = null, $remove_children = false) {
    if ($this->MD->is_category($id) && is_bool($remove_children)) {
        //get all children category
        $children = $this->get_children_categories($id);
        if (!$children) {
            return $this->MD->remove($id, $this->categories_table);
        } else {
            if ($remove_children && is_array($children)) {
                unset($children['parent_category']);
                foreach ($children as $child) {
                    $removed = $this->MD->remove($child->id, $this->categories_table);
                    if ($removed) {
                        //problem here
                        unset($child);
                    }
                }
                //the $children is not empty after remove all the items
                if (empty($children)) {
                    return $this->MD->remove($id, $this->categories_table);
                } else {
                    return false;
                }
            } else {
                return false;
            }
        }
    } else {
        return false;
    }
}

Answer 1

为了删除/设置null数组元素，我们需要传递数组unset($children[$key]);的特定索引 -

foreach ($children as $key=>$child) {
                    $removed = $this->MD->remove($child->id, $this->categories_table);
                    if ($removed) {
                        //problem here
                        unset($children[$key]);
                    }
                }

希望这会对你有所帮助。

在对象数组中取消设置对象

1 个答案: