php根據二維陣列中的某一元素相等，另乙個元素相加

二維陣列：$taskdata

array
(    [0] => array
(            [area] => 1[winsflag] => 7[
count] => 3)
[1] => array
(            [area] => 1[winsflag] => 3[
count] => 2)
[2] => array
(            [area] => 1[winsflag] => 5[
count] => 2)
[3] => array
(            [area] => 2[winsflag] => 6[
count] => 2)
[4] => array
(            [area] => 2[winsflag] => 3[
count] => 2)
[5] => array
(            [area] => 3[winsflag] => 7[
count] => 3)
[6] => array
(            [area] => 3[winsflag] => 1[
count] => 1)
[7] => array
(            [area] => 4[winsflag] => 2[
count] => 1)
[8] => array
(            [area] => 4[winsflag] => 2[
count] => 1)
)

根據area相同將count相加

$item=;

foreach($taskdata
as$k=>$v
)else
}

結果：得到乙個新的陣列 $item

array

(    [1] => array
(            [area] => 1[winsflag] => 7[
count] => 7)
[2] => array
(            [area] => 2[winsflag] => 6[
count] => 4)
[3] => array
(            [area] => 3[winsflag] => 7[
count] => 4)
[4] => array
(            [area] => 4[winsflag] => 2[
count] => 2)
)

根據需求改變一下，把相同的值取出來，其餘拼接一起

$item=;

foreach($equityinfos as $k=>$v)else
}

上面說的是根據乙個元素相等，假如要根據兩個元素相等呢，下面就來解決

array

(    [0] => array
(            [send_detail_id] => 65379[amount] => 1[sn] => mb12-69-181),[1] => array
(            [send_detail_id] => 65380[amount] => 2[sn] =>mb12-69-181),[2] => array
(            [send_detail_id] =>65380[amount] => 1[sn] => mb12-69-181),[3] => array
(            [send_detail_id] => 65382[amount] => 1[sn] => sa12-64-180n2001
))如果兩個欄位send_detail_id和sn相同才合併求和，結果應該是這種
array
(    [0] => array
(            [send_detail_id] => 65379[amount] => 1[sn] => mb12-69-181),[1] => array
(            [send_detail_id] => 65380[amount] => 3  //
和後面的相加了，第乙個就不能和他相加
[sn] =>mb12-69-181),[3] => array
(            [send_detail_id] => 65382[amount] => 1[sn] => sa12-64-180n2001
))其實很簡單

foreach($arr

as$v
)else
}print_r(array_values($ret));

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