Question

情况相当复杂，请做好准备，

这是过滤器之前的数组结果

    Array
(
    [0] => Array
        (
            [pointText] => 1000pts
            [points] => 1000
            [redeemMode] => 1
        )

    [1] => Array
        (
            [pointText] => 950pts
            [points] => 950
            [redeemMode] => 1
        )

    [2] => Array
        (
            [pointText] => 800pts + Cash RM 200
            [points] => 800
            [redeemMode] => 2
        )

    [3] => Array
        (
            [pointText] => 500pts + Installment RM 100 (5% | 12 Months)
            [points] => 500
            [redeemMode] => 3
        )

)

我需要检查redeemMode是否具有多于1个相同的值，我将只显示foreach结果中的最低点。在上面的示例中，redeemMode =＆gt; 1似乎不止一次出现，我不想显示具有相同redeemMode的两个点，我只想显示最低点。在这种情况下，我会显示点=＆gt;仅950点。其余的redeemMode =＆gt; 2和3将保持相同。

这是过滤器后的数组结果

    Array
(

    [0] => Array
        (
            [pointText] => 950pts
            [points] => 950
            [redeemMode] => 1
        )

    [1] => Array
        (
            [pointText] => 800pts + Cash RM 200
            [points] => 800
            [redeemMode] => 2
        )

    [2] => Array
        (
            [pointText] => 500pts + Installment RM 100 (5% | 12 Months)
            [points] => 500
            [redeemMode] => 3
        )

)

Answer 1

考虑一下。这些项目被放入一个由兑换模式键入的数组中。如果该密钥已经存在，则检查哪个密钥值最低，以决定保留哪一个。

$items = array(
    array(
        'pointText' => '1000pts',
        'points' => '1000',
        'redeemMode' => '1'
        ),
    array(
        'pointText' => '950pts',
        'points' => '950',
        'redeemMode' => '1'
        ),
    array(
        'pointText' => '800pts + Cash RM 200',
        'points' => '800',
        'redeemMode' => '2'
        ),
    array(
        'pointText' => '500pts + Installment RM 100 (5% | 12 Months)',
        'points' => '500',
        'redeemMode' => '3'
        ),
    );

$itemsByRedeemMode = array();

foreach ($items as $item) {
    if (isset($itemsByRedeemMode[$item['redeemMode']])) {
        if ($item['points'] < $itemsByRedeemMode[$item['redeemMode']]['points']) {
            $itemsByRedeemMode[$item['redeemMode']] = $item;
        }
    } else {
        $itemsByRedeemMode[$item['redeemMode']] = $item;
    }
}

print_r($itemsByRedeemMode);

Answer 2

我的同事试图提供帮助，这是他的解决方案

    <?php
    $array = array(
        array
            (
                'pointText' => '1000pts',
                'points' => 1000,
                'redeemMode' => 1
            ),

        array
            (
                'pointText' => '950pts',
                'points' => 1050,
                'redeemMode' => 1
            ),

        array
            (
                'pointText' => '800pts + Cash RM 200',
                'points' => 800,
                'redeemMode' => 2
            ),
        array
            (
                'pointText' => '500pts + Installment RM 100 (5% | 12 Months)',
                'points' => 500,
                'redeemMode' => 3
            )
    );
    $result = array();

    foreach ($array as $data) {
        $isHas = 0;
        $mode = $data['redeemMode'];
        foreach ($result as $key=> $data1) {
            if ($data1['redeemMode'] == $mode) {
                if ($data['points'] < $data1['points']) {
                    unset($result[$key]);
                    array_push($result,$data);
                }
                $isHas = 1;
            }
        }
        if ($isHas == 0) {
            array_push($result,$data);
        }
    }
    print_r($result);
?>

它的工作！感谢我的同事！

Answer 3

一个小阵列减少使得这个非常紧凑：

$array = array_reduce($array, function (array $result, array $item) {
    if (!isset($result[$item['redeemMode']]) || $item['points'] < $result[$item['redeemMode']]['points']) {
        $result[$item['redeemMode']] = $item;
    }
    return $result;
}, []);

获取Array PHP中的最低值

3 个答案: