Question

我有一个多维数组。

Array
(
    [0] => Array
        (
            [NAME] => FEMFAT
            [VERSION] => 5.1
            [VENDOR] => MAGNAECS
            [END] => 2015-01-30
            [USED_LICENSES] => 1
            [TOTAL_LICENSES] => 1
            [DENIED_LICENSES] => 0
        )
[1] => Array
    (
        [NAME] => FEMFAT
        [VERSION] => 5.1
        [VENDOR] => MAGNAECS
        [END] => 2015-01-30
        [USED_LICENSES] => 0
        [TOTAL_LICENSES] => 1
        [DENIED_LICENSES] => 0
    )

从上面的数组我想要输出如下。如果name是相同的剩余值添加到第一个数组。

Array
(
    [0] => Array
        (
            [NAME] => FEMFAT
            [VERSION] => 5.1
            [VENDOR] => MAGNAECS
            [END] => 2015-01-30
            [USED_LICENSES] => 1
            [TOTAL_LICENSES] => 2
            [DENIED_LICENSES] => 0
        )

我尝试了什么：

$newArr = array(); 
foreach ($featureInfo as $val) { 
    $newArr[$val['NAME']] = $val; 
} 
$featureInfo = array_values($newArr);

Answer 1

你几乎就在那里，当它尚未设置在新容器上时推送整个数组，如果已经设置，那么只需添加它们：

$newArr = [];
foreach($array as $value) {
    if(!isset($newArr[$value['NAME']])) { // if this name is not yet inside, push it
        $newArr[$value['NAME']] = $value;
    } else { // if already inside then add
        $newArr[$value['NAME']]['USED_LICENSES'] += $value['USED_LICENSES'];
        $newArr[$value['NAME']]['TOTAL_LICENSES'] += $value['TOTAL_LICENSES'];
        $newArr[$value['NAME']]['DENIED_LICENSES'] += $value['DENIED_LICENSES'];
    }
}

// $newArr = array_values($newArr); // optional array reindex

Answer 2

Ghost对array_reduce的回答：

// where $data is your original array
$final = array_values(array_reduce($data, function ($prev, $curr) {
    if (isset($prev[$curr['NAME']])) {
        $prev[$curr['NAME']]['USED_LICENSES'] += $curr['USED_LICENSES'];
        $prev[$curr['NAME']]['TOTAL_LICENSES'] += $curr['TOTAL_LICENSES'];
        $prev[$curr['NAME']]['DENIED_LICENSES'] += $curr['DENIED_LICENSES'];
    } else {
        $prev[$curr['NAME']] = $curr;
    }

    return $prev;
}, array()));

如何从PHP中的多维数组中获取唯一值？

2 个答案: