[英]PHP Multiply Value in array where has same element in multidimentional array
can someone explain me how to multiply the value from this code?有人可以解释我如何乘以这段代码的值吗? i tried but still cant solve this
我试过但仍然无法解决这个问题
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,
),
);
the answer should back to array with value already multiply where it has same name答案应该返回到具有相同名称的值已经相乘的数组
newArray(
0 => array(
'name'=> AA,
'value' => ...,
),
1 => array(
'name' => BB,
'value' => ....,
),
);
To multiply duplicate value and get new array:乘以重复值并获得新数组:
$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);
You can try following solution.您可以尝试以下解决方案。
$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);
Out put输出
Array
(
[0] => Array
(
[name] => AA
[value] => 15.288
)
[1] => Array
(
[name] => BB
[value] => 9.24
)
)
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