PHP把列表數據的子級內容合併到父級
1、父級count總和 = 父級count + 該父級下所有子級count
2、代碼：
public function list(){
$assoc = [ //定義父級ID對應的子級ID
1 => [1, 3],
2 => [2, 4, 5],
6 => [6, 7, 8],
9 => [9, 10]
];
$list = [
['id'=>'1', 'name'=>'父級1', 'count'=>1],
['id'=>'2', 'name'=>'父級2', 'count'=>1],
['id'=>'3', 'name'=>'子級3', 'count'=>1],
['id'=>'4', 'name'=>'子級4', 'count'=>1],
['id'=>'5', 'name'=>'子級5', 'count'=>1],
['id'=>'6', 'name'=>'父級6', 'count'=>1],
['id'=>'7', 'name'=>'子級7', 'count'=>1],
['id'=>'8', 'name'=>'子級8', 'count'=>1],
];
$ids = array_column($list, 'id');
$listCombine = array_combine($ids, $list);
$result = [];
$pids = array_keys($assoc);
foreach ($pids as $pid){
$ids = isset($assoc[$pid]) ? $assoc[$pid] : []; //獲取父級下的子級
foreach ($ids as $id){
if (!isset($listCombine[$id])){
continue;
}
if(isset($result[$pid])){
$result[$pid]['count'] += $listCombine[$id]['count'];
}else{
$result[$pid] = $listCombine[$id];
}
}
}
return $result;
}
3、打印結果爲
array (
1 =>
array (
'id' => '1',
'name' => '父級1',
'count' => 2,
),
2 =>
array (
'id' => '2',
'name' => '父級2',
'count' => 3,
),
6 =>
array (
'id' => '6',
'name' => '父級6',
'count' => 3,
),
)
