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));

獲取陣列中某一元素

1 array shift 彈出陣列第乙個元素 舉例 a array new hello cool new array shift a new是第乙個元素值,取最後乙個元素可以用array pop 這種操作會改變原陣列的內容 2 array slice 擷取陣列 舉例 a array new hel...

根據list某一元素對其進行分組

今天有個小需求，簡單記錄一下，將返回的list根據其中的時間字段進行分組 describe 根據集合某一屬性建立分組返回map param param list list return author 何章懷曉 hezhanghuaixiao date 2020 9 15 17 33 other pr...

怎樣讓Python根據物件的某一元素進行排序？

以前我們對一系列元素排序以公升序或者降序時，可以建立乙個列表，然後使用自帶的sort函式解決公升序倒序問題，那麼現在，如果要物件的某個元素值進行排序？該怎樣獲取它的屬性然後對屬性進行排序呢？其實方法很簡單。python自帶的sort函式有乙個key值可以讓他按照key的指定方法去排序，譬如 sort...