PHP搜索多个键/值组合的深层嵌套数组

Question

我有一个深层嵌套的多维数组。我希望能够搜索多个键/值对并返回其父匹配项。

示例数组：

//$array
Array
(
[0] => Array
        [ID] => 1
        [Name] => My Name
        [GroupLocations] => Array
            (
                [0] => Array
                    (

                        [GroupId] => 111
                        [LocationId] => 222 
                        [Location] => Array
                            (
                                [Name] => My Location
                                [Street1] => 555 Somewhere Lane
                                [City] => City
                                [County] => County
                                [State] => CA
                                [Country] => US
                                [PostalCode] => 00000
                            )
                    )

            )
    )
[1] => Array
        [ID] => 2
        [Name] => My Other Name
        [GroupLocations] => Array
            (
                [0] => Array
                    (

                        [GroupId] => 222
                        [LocationId] => 333 
                        [Location] => Array
                            (
                                [Name] => My Other Location
                                [Street1] => 666 Other Rd.
                                [City] => City
                                [County] => County
                                [State] => CA
                                [Country] => US
                                [PostalCode] => 00000
                            )
                    )

            )
    )
)

类似于PHP Search an Array for multiple key / value pairs，但考虑到更深层次。

因此，如果我有上面的示例数组，并且想要过滤数组并根据需要搜索数组的不同嵌套部分的过滤器获取结果

$filters = array(
  'ID' => $_GET[‘ID’],
  'LocationId' => $_GET['LocationId']
);

$results = filterMyArray($array, $filters);

其中 filterMyArray 函数将使用过滤器数组递归过滤所有级别并返回所有匹配的索引/。努力想出一个体面的解决方案。关于如何完成此任务的任何建议？

Answer 1

也许下面的递归函数可以帮助你；您可以更改要查找的键 ($key)，它将返回嵌套/多维数组中键的所有出现。

<?php
$arr = [
    [
        'ID' => 1,
        'Name' => 'My Name',
        'GroupLocations' => [
            [
                'GroupId' => 111,
                'LocationId' => 222,
                'Location' => [
                    'Name' => 'MyLocation',
                    'Street1' => '555 Somewhere Lane'
                ]
            ]
        ]
    ]   
];

$results = []; // the container for the search result(s)
$key = 'Name'; // the key we are looking for
findKey($arr, $key, $results); // invoke the search function

/** print the result of our search */
echo '<pre>';
var_dump($results);
echo '<pre>';

/**
 * @param array $arr the multidimensional array we are searching
 * @param string $key the key we are looking for
 * @param $results           passed by reference - in case the key is found, this array 'stores' the corresponding key-value pair.
 */
function findKey($arr = [], $key = '', &$results = [])
{
    foreach ($arr as $key0 => $value0) {
        if ($key0 == $key && !is_array($value0)) {
            $results[][$key] = $value0;
        }
        if (is_array($value0)) {
            findKey($value0, $key, $results);
        }
    }
    return false;
}

输出：

array(2) {
  [0]=>
  array(1) {
    ["Name"]=>
    string(7) "My Name"
  }
  [1]=>
  array(1) {
    ["Name"]=>
    string(10) "MyLocation"
  }
}