Question

我有一个数组，字符串和数组有相同的名称“item”，一个实例是一个数组，另一个是数组中的字符串，我想从数组中删除整个“item”字符串< / p>

数组;

//JSON



 [{
          "id":"109",
          "text":"dashboard",
          "items":[ //to be ignored
             {
                "id":"1",
                "text":"financial_dashboard",
                "items":"109" //to be deleted
             },
             {
                "id":"108",
                "text":"project_dashboard",
                "items":"109" //to be deleted
             }
          ]
       }]


//Array PHP
(
    [0] => Array
        (
            [id] => 109
            [expanded] =>  true
            [text] => Dashboard
            [items] => Array  //to be ignored
                (
                    [0] => Array
                        (
                            [id] => 1
                            [expanded] =>  true
                            [text] => Financial Dashboard
                            [items] => 109  //to be deleted
                        )

                    [1] => Array
                        (
                            [id] => 108
                            [expanded] =>  true
                            [text] => Project Dashboard
                            [items] => 109  //to be deleted
                        )

                )

        ))

有什么建议吗？

Answer 1

你必须知道数组是如何工作的，你可以通过delete删除这个多维数组：array [0] [0]和array [0] [1]

unset($a[0][0]);
unset($a[0][1]);

Answer 2

您可以使用以下两个嵌套地图;

var arr = [{
      "id":"109",
      "text":"dashboard",
      "items":[ //to be ignored
         {
            "id":"1",
            "text":"financial_dashboard",
            "items":"109" //to be deleted
         },
         {
            "id":"108",
            "text":"project_dashboard",
            "items":"109" //to be deleted
         }
      ]
   }];
   
function delNestedItems(a){
 return a.map(o => (o.items.map(q => (delete q.items,q)),o));
}

console.log(delNestedItems(arr))

Answer 3

您可以使用像这样的递归PHP函数：

function removeItems(&$arr) {
    if (!is_array($arr)) return;
    if (isset($arr["items"]) && is_string($arr["items"])) unset($arr["items"]);
    foreach ($arr as &$value ) removeItems($value);
}

这样称呼：

removeItems($arr);

在eval.in上看到它。

输出是：

Array
(
    [0] => Array
        (
            [id] => 109
            [text] => dashboard
            [items] => Array
                (
                    [0] => Array
                        (
                            [id] => 1
                            [text] => financial_dashboard
                        )

                    [1] => Array
                        (
                            [id] => 108
                            [text] => project_dashboard
                        )

                )

        )

)

从数组中删除字符串Item

3 个答案: