我在按鍵值拆分數組時遇到一個問題。我的數組如下所示：-Array([0] => Array ( [product_id] => 6 [brand_id] => 2 )[1] => Array ( [product_id] => 1 [brand_id] => 1 )[2] => Array ( [product_id] => 5 [brand_id] => 1 ))現在我想根據brand_id過濾分割數組。我的預期輸出如下：-Array([0] => Array( [0] => Array ( [product_id] => 6 [brand_id] => 2 ))[1] => Array( [0] => Array ( [product_id] => 1 [brand_id] => 1 ) [1] => Array ( [product_id] => 5 [brand_id] => 1 )))我的輸入數組存儲在 $proArray 變量中我的嘗試如下：-$brands = array(); foreach ($proArr as $key => $pro) { $brands[] = $pro['brand_id']; } $brands = array_unique($brands); $ckey = 0; foreach($brands as $brand){ }
2 回答
BIG陽
TA貢獻1859條經驗 獲得超6個贊
一種方法是使用簡單的foreach()循環來根據您的brand_id推送值，如下所示-
$key = 'brand_id';
$return = array();
foreach($array as $v) {
$return[$v[$key]][] = $v;
}
print_r($return);
工作演示： https://3v4l.org/bHuWV
慕田峪7331174
TA貢獻1828條經驗 獲得超13個贊
代碼：
$arr = array(
array(
'product_id' => 6,
'brand_id' => 2
),
array(
'product_id' => 1,
'brand_id' => 1
),
array(
'product_id' => 5,
'brand_id' => 1
)
);
$res = [];
foreach ($arr as $key => $value)
$res[$value['brand_id']][] = $value;
$res = [...$res];
print_r($res);
輸出：
Array
(
[0] => Array
(
[0] => Array
(
[product_id] => 6
[brand_id] => 2
)
)
[1] => Array
(
[0] => Array
(
[product_id] => 1
[brand_id] => 1
)
[1] => Array
(
[product_id] => 5
[brand_id] => 1
)
)
)
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