Question

我正在尝试从多维数组中删除重复值。我已经尝试了许多例子，但我没有得到我想要的。

我的阵列在这里

Array
(
  [0] => Array
     (
        [0] => stdClass Object
            (
                [CouponCode] => REZEZ150
                [PurchaseAmt] => 1000.00
                [DiscountAmt] => 150.00
            )
        [1] => stdClass Object
            (
                [CouponCode] => REZEZ500
                [PurchaseAmt] => 2500.00
                [DiscountAmt] => 500.00
            )
    )
[1] => Array
    (
        [0] => stdClass Object
            (
                [CouponCode] => REZEZ150
                [PurchaseAmt] => 1000.00
                [DiscountAmt] => 150.00
            )
        [1] => stdClass Object
            (
                [CouponCode] => REZEZ350
                [PurchaseAmt] => 2000.00
                [DiscountAmt] => 350.00
            )
        [2] => stdClass Object
            (
                [CouponCode] => REZEZ500
                [PurchaseAmt] => 2500.00
                [DiscountAmt] => 500.00
            )
      )
     )

删除像

这样的重复值后我想要数组

 Array
    (
      [0] => Array
        (
            [0] => stdClass Object
                (
                    [CouponCode] => REZEZ150
                    [PurchaseAmt] => 1000.00
                    [DiscountAmt] => 150.00
                )
            [1] => stdClass Object
                (
                    [CouponCode] => REZEZ350
                    [PurchaseAmt] => 2000.00
                    [DiscountAmt] => 350.00
                )
            [2] => stdClass Object
                (
                    [CouponCode] => REZEZ500
                    [PurchaseAmt] => 2500.00
                    [DiscountAmt] => 500.00
                )
          )
         )

类似的问题与答案，但没有解决我的情况：

[How to remove duplicates from multidimensional array in php \[duplicate\]][1]

Answer 1

试试这个，

$arrResult = $arrResult1 = array();

foreach($arrData as $key1 => $arrData1){
    foreach($arrData1 as $key2 => $arrData2){
                $arrResult[] = $arrData2;
    }
}

$arrResult1[] = array_map("unserialize", array_unique(array_map("serialize", $arrResult)));

echo "<pre>"; print_r($arrResult1);

Answer 2

谢谢我已经解决了首先，我将其改为单维数组，如

 $a =    Array
(
    [0] => stdClass Object
        (
            [CouponCode] => REZEZ150
            [PurchaseAmt] => 1000.00
            [DiscountAmt] => 150.00
        )

    [1] => stdClass Object
        (
            [CouponCode] => REZEZ500
            [PurchaseAmt] => 2500.00
            [DiscountAmt] => 500.00
        )

    [2] => stdClass Object
        (
            [CouponCode] => REZEZ150
            [PurchaseAmt] => 1000.00
            [DiscountAmt] => 150.00
        )

    [3] => stdClass Object
        (
            [CouponCode] => REZEZ350
            [PurchaseAmt] => 2000.00
            [DiscountAmt] => 350.00
        )

    [4] => stdClass Object
        (
            [CouponCode] => REZEZ500
            [PurchaseAmt] => 2500.00
            [DiscountAmt] => 500.00
        )

)

之后运行foreach循环代表KEY AND VALUE Like

$j=array();     

foreach ($a as $key => $value) {
    $j[$value->CouponCode]['CouponCode']=$value->CouponCode;
    $j[$value->CouponCode]['PurchaseAmt']=$value->PurchaseAmt;
    $j[$value->CouponCode]['DiscountAmt']=$value->DiscountAmt;
}

p($j);

现在我得到了结果

Array
(
    [REZEZ150] => Array
        (
            [CouponCode] => REZEZ150
            [PurchaseAmt] => 1000.00
            [DiscountAmt] => 150.00
        )

    [REZEZ500] => Array
        (
            [CouponCode] => REZEZ500
            [PurchaseAmt] => 2500.00
            [DiscountAmt] => 500.00
        )

    [REZEZ350] => Array
        (
            [CouponCode] => REZEZ350
            [PurchaseAmt] => 2000.00
            [DiscountAmt] => 350.00
        )

)

请建议我是不是好方法？

Answer 3

使用array_filter()：

$couponCodes = array();

$a = array_filter($a, function (stdClass $purchase) use (&$couponCodes) {
    if (in_array($purchase->CouponCode, $couponCodes)) {
        return false;
    }

    $couponCodes[] = $purchase->CouponCode;

    return true;
});

关注https://stackoverflow.com/a/34506942/1172545。

供参考，请参阅http://php.net/manual/en/function.array-filter.php。

如何从具有不同键的多维数组中删除重复值

3 个答案: