我將嘗試用小例子來解釋我的問題：我有一個表示資料庫資料的多維陣列，假設輸入如下所示：
Array
(
[0] => Array
(
[groupRange] => 20-25
[value] => 12
[followersFemaleRate] => 12
[followersMaleRate] => 14
)
[1] => Array
(
[groupRange] => 30-44
[value] => 32
[followersFemaleRate] => 17
[followersMaleRate] => 3
)
[2] => Array
(
[groupRange] => 30-44
[value] => 88
[followersFemaleRate] => 17
[followersMaleRate] => 3
)
)
我想要的是？總結價值，followersFemaleRate，followersMaleRate 具有相同的 groupRange，所以輸出應該是這樣的：
Array
(
[0] => Array
(
[groupRange] => 20-25
[value] => 12
[followersFemaleRate] => 12
[followersMaleRate] => 14
)
[1] => Array
(
[groupRange] => 30-44
[value] => 120
[followersFemaleRate] => 34
[followersMaleRate] => 6
)
)
我的代碼：
$RangeArray = [];
foreach($dbProfile->getData() as $d) {
foreach ($d->getGroupPercentages() as $x){
$ageRangeSingleArray['groupRange'] = $x->getGroupRange();
$ageRangeSingleArray['value'] = $x->getValue();
$ageRangeSingleArray['followersFemaleRate'] = $x->getFollowerGenderFemale();
$ageRangeSingleArray['followersMaleRate'] = $x->getFollowerGenderMale();
$RangeArray [] = $ageRangeSingleArray;
}
}
但是我卡住了，我的想法是首先檢查 groupRage 是否已經存在，如果是，則對該范圍的值求和，如果不添加帶有值的新元素 groupRange，對代碼有任何幫助嗎？
uj5u.com熱心網友回復：
嘗試：
$input = [
[
'groupRange' => '20-25',
'value' => 12,
'followersFemaleRate' => 12,
'followersMaleRate' => 14,
],
[
'groupRange' => '30-44',
'value' => 88,
'followersFemaleRate' => 17,
'followersMaleRate' => 3,
],
[
'groupRange' => '30-44',
'value' => 32,
'followersFemaleRate' => 17,
'followersMaleRate' => 3,
],
];
$groupedArray = [];
foreach( $input as $item ){
$groupedArray[$item['groupRange']]['groupRange'] = $item['groupRange'];
$groupedArray[$item['groupRange']]['value'] = ($groupedArray[$item['groupRange']]['value'] ?? 0) $item['value'];
$groupedArray[$item['groupRange']]['followersFemaleRate'] = $item['followersFemaleRate'];
$groupedArray[$item['groupRange']]['followersMaleRate'] = $item['followersMaleRate'];
}
$output = array_values($groupedArray);
print_r($output);
輸出：
Array
(
[0] => Array
(
[groupRange] => 20-25
[value] => 12
[followersFemaleRate] => 12
[followersMaleRate] => 14
)
[1] => Array
(
[groupRange] => 30-44
[value] => 120
[followersFemaleRate] => 17
[followersMaleRate] => 3
)
)
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