php-如何对多维数组求和
我有以下数据:php-如何对多维数组求和,php,arrays,multidimensional-array,Php,Arrays,Multidimensional Array,我有以下数据: Array( [A] => Array ( [AA] => 10 ) [B] => Array ( [BA] => 5 [BB] => 1 [BC] => -2 ) [C]
Array(
[A] => Array
(
[AA] => 10
)
[B] => Array
(
[BA] => 5
[BB] => 1
[BC] => -2
)
[C] => Array
(
[CA] => 3
[CB] => 0
)
)
我想对数组BA、BB、BC等的第二个元素的值求和,如下所示:
Array(
[A] => 10
[B] => 4
[C] => 3
)
我尝试过使用foreach,我使用php作为我的平台,但结果是错误的,有人能给我解释一下,并给出解决这个问题的逻辑吗?谢谢您可以通过数组循环并使用数组求和
Doc:这应该适用于您的示例中的阵列:
<?php
$array = array
(
"A"=>array
(
"AA" => 10,
),
"B"=>array
(
"BA" => 5,
"BB" => 1,
"BC" => -2
),
"C"=>array
(
"CA" => 3,
"CB" => 0
)
);
foreach ($array as $key=>$value)
{
$mehrdad[]=$key;
}
foreach ($mehrdad as $key1=>$value1)
{
$arrays=$array[$value1];
foreach ($arrays as $key2=>$value2)
{
$mehrdadi[]=$key2;
}
}
$mehrdadend=array_unique($mehrdadi);
$mehrdadis = array();
foreach ($mehrdadend as $key3=>$value3)
{
$sum=array_sum(array_column($array, $value3));
$mehrdadis[$value3] = $sum;
}
print_r($mehrdadis);
?>
这在不使用内置函数的情况下工作。如果需要求和列
Array
(
[A] => 10
[B] => 4
[C] => 3
)
$arr = array(
"A" => array
(
"AA" => 10,
),
"B" => array
(
"BA" => 5,
"BB" => 1,
"BC" => -2
),
"C" => array
(
"CA" => 3,
"CB" => 0
)
);
$res = array();
foreach($arr as $key => $value) {
foreach($value as $number) {
(!isset($res[$key])) ?
$res[$key] = $number :
$res[$key] += $number;
}
}
echo "<pre>";
print_r( $res );
echo "</pre>";
<?php
$array = array
(
"A"=>array
(
"AA" => 10,
),
"B"=>array
(
"BA" => 5,
"BB" => 1,
"BC" => -2
),
"C"=>array
(
"CA" => 3,
"CB" => 0
)
);
foreach ($array as $key=>$value)
{
$mehrdad[]=$key;
}
foreach ($mehrdad as $key1=>$value1)
{
$arrays=$array[$value1];
foreach ($arrays as $key2=>$value2)
{
$mehrdadi[]=$key2;
}
}
$mehrdadend=array_unique($mehrdadi);
$mehrdadis = array();
foreach ($mehrdadend as $key3=>$value3)
{
$sum=array_sum(array_column($array, $value3));
$mehrdadis[$value3] = $sum;
}
print_r($mehrdadis);
?>
Array
(
[AA] => 10
[BA] => 5
[BB] => 1
[BC] => -2
[CA] => 3
[CB] => 0
)