数组的数组的PHP数组

Question

我尝试通过' field‘的值搜索这个数组，然后返回数组中与该字段相关联的' value’的值。

例如，我想说“告诉我与theThirdField相关的值”。

我已经尝试了很多很多类似下面这样的排列：$myVariable =$Array‘’result‘；

为了进一步澄清，我永远不会知道我的搜索字段位于哪个顺序/子数组中，我只知道与' field‘相关的字符串值。

我该如何做到这一点呢？

Array
(
    [result] => Array
        (
            [totalrows] => 1
            [rows] => Array
                (
                    [0] => Array
                        (
                            [rownum] => 1
                            [values] => Array
                                (
                                    [0] => Array
                                        (
                                            [field] => testMeOnce
                                            [value] => 436586498
                                        )

                                    [1] => Array
                                        (
                                            [field] => testMeTwice
                                            [value] => 327698034
                                        )

                                    [2] => Array
                                        (
                                            [field] => theThirdField
                                            [value] => 108760374
                                        )

                                    [3] => Array
                                        (
                                            [field] => theFourthField
                                            [value] => 2458505
                                        )

                                    [4] => Array
                                        (
                                            [field] => fifthField
                                            [value] => -0.0201
                                        )

                                )

                        )

                )

        )

)

Answer 1

你有没有料到会发生这样的事情？

$needle = 'theThirdField'; // searched field name
$valuesArray = $Array['result']['rows'][0]['values']; //now you have clearer array

array_walk($valuesArray, function($element, $key) use ($needle) {
    if ($element['field'] == $needle) {
        echo $element['value'];
    }
});

Answer 2

假设您只想在$myVariable维度中搜索，我会这样做：

$myVariable = $Array['result']['rows'][0]['values'];

foreach ($myVariable as $key => $value) {
    if( $value['field'] === 'theThirdField' ) { 
        echo $value['value']; 
        break;
    }
}

Answer 3

当我运行你的代码时，我得到了一些语法错误。我已经将您的数组改为这样(仅更改了语法)：

$a = Array
    (
        'result' =>
            [
                'totalrows' => 1,
                'rows' =>
                    [
                        0 =>
                            [
                                'rownum' => 1,
                                'values' =>
                                    [
                                        0 => 
                                            [
                                                'field' => 'testMeOnce',
                                                'value' => 436586498
                                            ],

                                        1 => 
                                            [
                                                'field' => 'testMeTwice',
                                                'value' => 327698034
                                            ],

                                        2 => 
                                            [
                                                'field' => 'theThirdField',
                                                'value' => 108760374
                                            ],

                                        3 => 
                                            [
                                                'field' => 'theFourthField',
                                                'value' => 2458505
                                            ],

                                        4 => 
                                            [
                                                'field' => 'fifthField',
                                                'value' => -0.0201
                                            ]

                                    ]

                            ]

                    ]

            ]

    );

现在您可以获得如下所示的值：

print($a['result']['rows'][0]['values'][2]['value']); // --> 108760374

我希望这就是你正在寻找的！