多维数组中的Array_slice？但是输出不同答案

【问题标题】：Array_slice in multidimensional array? But a different output多维数组中的Array_slice？但是输出不同
【发布时间】：2019-06-28 03:38:21
【问题描述】：

我在 php 中有一个这样的数组：

     $multid_array = array(
        "url" => "www.checkmyhouse.cpm",
        "date" => "2019/12/12",
        "minor" => 1,
        "sittingroom" => 1,
        "dinningroom" => 2,
        "toilet" => 2,
        "parking" => 1,
        "bedroom" => 2,
        "garage" => 2,
        "rooms" => 4,
        "garden" => 1,

        "url_1" => "-sameurl-",
        "date_1" => "2019/12/3",
        "minor_1" => 3,
        "sittingroom_1" => 2,
        "dinningroom_1" => 2,
        "toilet_1" => 3,
        "parking_1" => 1,
        "bedroom_1" => 2,
        "garage_1" => 6,
        "rooms_1" => 6,
        "garden_1" => 1,

        "url_2" => "-sameurl-",
        "date_2" => "2019/12/5",
        "minor_2" => 3,
        "sittingroom_2" => 2,
        "dinningroom_2" => 2,
        "toilet_2" => 3,
        "parking_2" => 1,
        "bedroom_2" => 5,
        "garage_2" => 6,
        "rooms_2" => 9,
        "garden_2" => 1,
    );

我四处搜索，找到了这个链接。但无法弄清楚。继续靠近。 array_slice in multidimensional array?

这是我想要的输出：

$array =
    [ 
       "levels" => array(
            "0" => array(
                "url" => "www.checkmyhouse.cpm",
                "date" => "2019/12/1",
                "minor" => 1,
                "sittingroom" => 1,
                "dinningroom" => 2,
                "toilet" => 2,
                "parking" => 1,
                "bedroom" => 2,
                "garage" => 2,
                "rooms" => 5,
                "garden" => 1,
            ),
            "1" => array(
                "url" => "-sameurl-",
                "date" => "2019/12/3",
                "minor" => 3,
                "sittingroom" => 2,
                "dinningroom" => 2,
                "toilet" => 3,
                "parking" => 1,
                "bedroom" => 2,
                "garage" => 6,
                "rooms" => 6,
                "garden" => 1,
            ),
            "2" => array(
                "url" => "-sameurl-",
                "date" => "2019/12/5",
                "minor" => 3,
                "sittingroom" => 2,
                "dinningroom" => 2,
                "toilet" => 3,
                "parking" => 1,
                "bedroom" => 5,
                "garage" => 6,
                "rooms" => 9,
                "garden" => 1,
            )
        )
    ];

只是想重新排列它。但我使用了array_slice，只能得到前9个元素的输出。

array_splice($multid_array,9);

但我想自动运行它，所以如果将更多信息添加到数组中，它仍然可以工作

【问题讨论】：

您可以查看array_chunk()，但不要认为有任何东西会自动处理删除"url_1"等中的_1。
谢谢@NigelRen。使用了array_chunk()，但必须完全删除“url_1”_1，让系统自己计算。

标签： php arrays multidimensional-array slice

【解决方案1】：

为什么不使用简单的 for 循环：（在这种情况下，每个数组中可以有不同数量的字段，并且不需要像使用 array_chunk 时那样固定）

$multid_array = array("url" => "www.checkmyhouse.cpm","date" => "2019/12/12","url_1" => "-sameurl-","date_1" => "2019/12/3","url_2" => "-sameurl-","date_2" => "2019/12/5",);

$ans = [];
foreach($multid_array as $k => $v) {
    $parts = explode("_", $k); 
    $pk = 0; //default as 0 as when no prefix set to key "0"
    if (count($parts) > 1) { // check if has suffix
        $pk = $parts[1];
        $k = $parts[0];
    }
    if (!isset($ans[$pk]))
        $ans[$pk] = []; // init array if first time
    $ans[$pk][$k] = $v;
}

现在$ans 将包含您的数据 - 如果您愿意，您可以添加“级别”键。

这仅在您保存“_”以标记内部索引并且它们未在实际键中使用时才有效

【讨论】：