[英]PHP Multiply Value in array where has same element in multidimentional array
有人可以解釋我如何乘以這段代碼的值嗎? 我試過但仍然無法解決這個問題
arrayK(
0 => array(
'name'=> AA,
'value' => 2.00,
),
1 => array(
'name' => AA,
'value' => 1.82,
),
2 => array(
'name' => BB,
'value' => 2.20,
),
3 => array(
'name' => AA,
'value' => 4.20,
),
4 => array(
'name' => BB,
'value' => 4.20,
),
);
答案應該返回到具有相同名稱的值已經相乘的數組
newArray(
0 => array(
'name'=> AA,
'value' => ...,
),
1 => array(
'name' => BB,
'value' => ....,
),
);
乘以重復值並獲得新數組:
$array=array(
0 => array(
'name'=> AA,
'value' => 2.00,
),
1 => array(
'name' => AA,
'value' => 1.82,
),
2 => array(
'name' => BB,
'value' => 2.20,
),
3 => array(
'name' => AA,
'value' => 4.20,
),
4 => array(
'name' => BB,
'value' => 4.20,
),
);
$result = array();
foreach ($array as $val) {
if (!isset($result[$val['name']]))
$result[$val['name']] = $val;
else
$result[$val['name']]['value'] *= $val['value'];
}
$result = array_values($result); // reindex array
echo "<pre>";
print_r($result);
您可以嘗試以下解決方案。
$arrayK = array(
0 => array(
'name'=> "AA",
'value' => 2.00,
),
1 => array(
'name' => "AA",
'value' => 1.82,
),
2 => array(
'name' => "BB",
'value' => 2.20,
),
3 => array(
'name' => "AA",
'value' => 4.20,
),
4 => array(
'name' => "BB",
'value' => 4.20,
),
);
$temp = array_values((array_unique(array_column($arrayK, 'name'))));
$arrayY = [];
for( $i = 0; $i < count($temp); $i++ ) {
foreach( $arrayK as $key => $val ) {
if( $val['name'] == $temp[$i] ) {
$arrayY[$i] = [
'name' => $val['name'],
'value' => isset($arrayY[$i]['value']) ? $val['value'] * $arrayY[$i]['value'] : $val['value']
];
}
}
}
print_r($arrayY);
輸出
Array
(
[0] => Array
(
[name] => AA
[value] => 15.288
)
[1] => Array
(
[name] => BB
[value] => 9.24
)
)
你可以在這里玩代碼
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