Wordpress自定义小部件UPDATE功能和数组

Question

我为wordpress博客创建了一个自定义类别小部件，但需要一些帮助，因为有些选项很少搞乱。

更新函数创建一个数组，但不是我需要的方式。以下是此类数组的示例：

Array
(
    [title] => Blog Categories
    [cat_visibility] => Array
        (
            [0] => 7
        )

    [categories] => Array
        (
            [0] => 1
            [1] => 9
        )

    [URL_term_id] => Array
        (
            [0] => 1
            [1] => 7
            [2] => 8
            [3] => 9
            [4] => 10
        )

    [URL_title] => Array
        (
            [0] => Category 1
            [1] => Category 2
            [2] => Category 3
            [3] => Category 4
            [4] => Category 5
        )

)

这是我的PHP代码：

public function update( $new_instance, $old_instance ) {
    $instance = $old_instance;
    $instance[ 'title' ] = strip_tags( $new_instance[ 'title' ] );
    $instance[ 'cat_visibility' ] = $new_instance[ 'cat_visibility' ];
    $instance[ 'categories' ] = $new_instance['categories'];
    $instance[ 'URL_term_id' ] = $new_instance[ 'URL_term_id' ];
    $instance[ 'URL_title' ] = $new_instance['URL_title'];
    return $instance;
}

最后，这是我想要实现的目标：

Array
(
    [0] => Array
        (
            [category_id] => 1
            [term_id] => 1
            [title] => Category 1
            [cat_visibility] => 
        )

    [1] => Array
        (
            [category_id] => 
            [term_id] => 7
            [title] => Category 2
            [cat_visibility] => 7
        )

    [2] => Array
        (
            [category_id] => 
            [term_id] => 8
            [title] => Category 3
            [cat_visibility] => 
        )

    [3] => Array
        (
            [category_id] => 9
            [term_id] => 9
            [title] => Category 4
            [cat_visibility] => 
        )

    [4] => Array
        (
            [category_id] => 
            [term_id] => 10
            [title] => Category 5
            [cat_visibility] => 
        )

)

到目前为止，我尝试使用以下代码转换初始数组：

$new_object = [];
        for($i=0;$i<count($URL_term_id);$i++){
            array_push($new_object,
                array(
                    "category_id"=>$cat_id[$i],
                    "term_id"=>$URL_term_id[$i],
                    "title"=>$URL_title_id[$i],
                    "cat_visibility"=>$cat_visibility[$i]
                )
            );
        }

它几乎创造了我所需要的东西，但由于键的不同而没有创建我需要的数组。

以下是我从中获得的信息：

Array
(
    [0] => Array
        (
            [category_id] => 1
            [term_id] => 1
            [title] => Category 1
            [cat_visibility] => 7
        )

    [1] => Array
        (
            [category_id] => 9
            [term_id] => 7
            [title] => Category 2
            [cat_visibility] => 
        )

    [2] => Array
        (
            [category_id] => 
            [term_id] => 8
            [title] => Category 3
            [cat_visibility] => 
        )

    [3] => Array
        (
            [category_id] => 
            [term_id] => 9
            [title] => Category 4
            [cat_visibility] => 
        )

    [4] => Array
        (
            [category_id] => 
            [term_id] => 10
            [title] => Category 5
            [cat_visibility] => 
        )

)

感谢任何建议和帮助。