我得到了一个键值数组，它表示要按组织层次结构（group、unit、department、team）筛选的选择，例如：

// dd($selections)
[
    "group2" => [
        "unit11" => [
            "department50" => [
                0 => "team10",
                1 => "team58"
             ],
        ],    
        "unit10" => [],
    ],

    "group5" => [
        "unit23" => [
            "department101" => []                
        ],
    ],    
]

它的结构稍有不同，其中每个键表示选择值，除了最后一个嵌套层，它是被选作值而不是键的team的列表。
我需要基于这些选择构建查询以筛选出结果。对于上面的示例，查询类似于：

$fullQuery
    ->where(function($query) {
        $query->where("group", "=", 'group2')
            ->where("unit", "=", 'unit11')
            ->where("department", "=", 'department50')
            ->where("team", "=", 'team10')
    })
    ->orWhere(function($query) {
        $query->where("group", "=", 'group2')
            ->where("unit", "=", 'unit11')
            ->where("department", "=", 'department50')
            ->where("team", "=", 'team58')
    })
    ->orWhere(function($query) {
        $query->where("group", "=", 'group5')
            ->where("unit", "=", 'unit23')
            ->where("department", "=", 'department101')                
    })

为此，我想以这样的方式“扁平化”数组，以便将所有唯一的结果作为数组：

arrays = [
    ['group' => 'group2', 'unit' => 'unit11', 'department' => 'department50', 'team' => 'team10'],
    ['group' => 'group2', 'unit' => 'unit11', 'department' => 'department50', 'team' => 'team58'],
    ['group' => 'group5', 'unit' => 'unit23', 'department' => 'department101'],
]

因为一旦我有了这些数组，我就可以迭代和查询它们：

$fullQuery = DB::table('mytable');

foreach ($arrays as $array) {
$fullQuery->orWhere(function($query) {
    $query->where("group", "=", $array->group)
        ->where("unit", "=", $array->unit)
        ->where("department", "=", $array->department)
        ->where("team", "=", $array->team)
    })
}

我试过用一些递归的方法，但是我不擅长递归，而且我离得到一个有效的结果还很远，除非有一种不使用递归的方法？