PHP過濾器通過特定的按鍵

Question

2維數組我有這樣的數組：

Array 
(
    [702a4584] => Array 
     (
      [type] => folder 
      [id] => 702a4584 
     ) 

    [b547b3a9] => Array 
     (
      [type] => folder 
      [id] => b547b3a9 

     ) 

    [fcb0d055] => Array 
     (
      [type] => page 
      [id] => fcb0d055 
     ) 
) 

我想將濾鏡陣列，使得僅輸入「文件夾」仍將：

Array 
(
    [702a4584] => Array 
     (
      [type] => folder 
      [id] => 702a4584 
     ) 

    [b547b3a9] => Array 
     (
      [type] => folder 
      [id] => b547b3a9 

     ) 

) 

我能做到這一點，但我會需要一個泛型函數：

$temp = array(); 
foreach($array as $key => $value) 
{ 
    if($value['type'] =="folder") 
    { 
     $temp[$key] = $value; 
    } 
} 

Answer 1

你可以使用array_filter：

$filtered = array_filter($array, function($v) { return $v['type'] == 'folder'; }); 

Answer 2

$input = Array(1,2,3,1,2,3,4,5,6); 
$input = array_map("unserialize", array_unique(array_map("serialize", $input)));