二維數組只選擇目標欄位

來源:互聯網
上載者:User

我現在二維數組中有1千多條資料,每條資料中欄位都有冗餘,我現在每條資料中只需要我紅框框出來的3條目標欄位就好啦,其他的都不要,
我現在知道要用雙重的foreach迴圈來做,但是一直做不出來,還請大家幫忙解答一下,謝謝
圖如下:

回複內容:

我現在二維數組中有1千多條資料,每條資料中欄位都有冗餘,我現在每條資料中只需要我紅框框出來的3條目標欄位就好啦,其他的都不要,
我現在知道要用雙重的foreach迴圈來做,但是一直做不出來,還請大家幫忙解答一下,謝謝
圖如下:

題主你是想把二位元組裡你想要的欄位取出來嗎, 不用兩次foreach

 mt_rand(1, 2000),        'good_name' => 'goodname' . $i,        'xxxxxxx' => 'xxxxx',        'wadadad' => 'adwawdadwad',        'remake' => ''    ];}//---構造測試資料 ---$data = [];foreach ($arry as $key => $value) {    $data[] = [        'platform_good_id' => $value['platform_good_id'],        'good_name'        => $value['good_name'],        'remake'           => $value['remake'],    ];}var_dump($data);

如下:

array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),    "b"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),    "c"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),    "d"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),    "e"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"));$result = array();foreach ($arr as $k => $v){    $result[$k] = array();    foreach($v as $key => $value){        if($key === "b" || $key === "d" || $key === "e"){            $result[$k][$key] = $value;        }    }}print_r($arr);print("
");print_r($result);?>

以上代碼是提取其中索引值為 b d e的元素然後組成一個新的數組。

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