Question

让我解释一下我的情况，我得到了一个多维数组。下面是我的数组的print_r。

    Array
(
    [0] => Array
        (
            [firstname] => Tinga
            [lastname] => 
            [email] => private@information.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 321
        )

    [1] => Array
        (
            [firstname] => Tinga
            [lastname] => 
            [email] => private@information.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 12
        )

    [2] => Array
        (
            [firstname] => Rijsbergen Automotive B.V.
            [lastname] => 
            [email] => private@information1.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 311
        )

    [3] => Array
        (
            [firstname] => Mike Verhoef
            [lastname] => Artis Garage Amsterdam
            [email] => private@information2.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 260
        )

    [4] => Array
        (
            [firstname] => Marc Kraak
            [lastname] => Vakgarage TEMA
            [email] => private@information3.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 257
        )

    [5] => Array
        (
            [firstname] => J&B Auto's
            [lastname] => 
            [email] => private@information4.nl
            [country_code] => NL
            [group] => B2B
            [order_count] => 249
        )
)

如您所见，这里有一个重复的数组，只有order_count是不同的。

我可以轻松地使用array_unique删除重复项，但随后它会随机删除其中一个数组。（我相信）。

我想要的是基于电子邮件（private_information）以最少的order_count删除重复项。（因此，只保留order_count最高的那个）

有人可以在这里帮助我吗？

Answer 1

基于提供的数组的解决方案是：

$filtered = [];
foreach ($array as $item) {
    $email = $item['email'];

    if (empty($filtered[$email]) || $filtered[$email]['order_count'] < $item['order_count']) {
        $filtered[$email] = $item;
    }
}

PHP删除重复的数组值

1 个答案: