Php 按id和总和合并数组

我正在尝试仅通过choosen键合并和计算。例如，我有以下数组：

$array=array（）；
$array['Fruit']['id'=>17、'name'=>'季节性水果'、'type'=>'水果'、'measurement'=>''、'amount'=>2]；
$array['Fruit']['id'=>17、'name'=>'季节性水果'、'type'=>'水果'、'measurement'=>''、'amount'=>1]；
$array['protein']['id'=>16，'name'=>'大豆酸奶'，'type'=>'蛋白质'，'measurement'=>''，'amount'=>2]；
$array['protein']['id'=>18，'name'=>oilseed'，'type'=>protein'，'measurement'=>grip'，'amount'=>2]；
$array['protein']['id'=>18，'name'=>oilseed'，'type'=>protein'，'measurement'=>grip'，'amount'=>1]；
$array['lipid']['id'=>19，'name'=>椰子粉，'type'=>lipid'，'measurement'=>汤匙，'amount'=>2]；
$array['lipid']['id'=>20，'name'=>巧克力粉，'type'=>lipid'，'measurement'=>汤匙，'amount'=>2]；
$array['lipid']['id'=>38，'name'=>'chocolate square'，'type'=>'lipid'，'measurement'=>''，'amount'=>1]；

最终输出应如下所示：

Array ( 
    [0] => Array ( 
        [id] => 17 
        [name] => seasonal fruit 
        [type] => Fruit 
        [measurement] => 
        [amount] => 3
    ) 
    [1] => Array ( 
        [id] => 16 
        [name] => soy yogurt 
        [type] => protein 
        [measurement] => 
        [amount] => 2 
    ) 
    [2] => Array ( 
        [id] => 18 
        [name] => oilseed 
        [type] => protein 
        [measurement] => grip 
        [amount] => 3
    ) 
    [3] => Array ( 
        [id] => 19 
        [name] => coconut powder 
        [type] => lipid 
        [measurement] => Tablespoon 
        [amount] => 2 
    )
    [4] => Array ( 
        [id] => 20 
        [name] => chocolate powder 
        [type] => lipid 
        [measurement] => Tablespoon 
        [amount] => 2 
    )
    [5] => Array ( 
        [id] => 38 
        [name] => chocolate square 
        [type] => lipid 
        [measurement] => 
        [amount] => 1 
    ) 
) 

我尝试了以下方法：

$courses=[]；
foreach（$key=>$item的数组）{
如果（！key_存在（$key$courses））{
$courses[$key]=[]；
}
foreach（$row形式的项目）{
$id=$row['id']；
如果（！key_存在（$id，$courses[$key]））{
$courses[$key][$id]=$row；
继续；
}
$r=&$courses[$key][$id]；
$r['amount']+=$row['amount']；
}
}

输出：

Array (
    [Fruit] => Array (
        [17] => Array (
            [id] => 17
            [name] => seasonal fruit
            [type] => Fruit
            [measurement] => 
            [amount] => 3
        )
    )
    [protein] => Array (
        [16] => Array (
            [id] => 16
            [name] => soy yogurt
            [type] => protein
            [measurement] => 
            [amount] => 2
        )
        [18] => Array (
            [id] => 18
            [name] => oilseed
            [type] => protein
            [measurement] => grip
            [amount] => 3
         )
     )
     [lipid] => Array (
         [19] => Array (
             [id] => 19
             [name] => coconut powder
             [type] => lipid
             [measurement] => Tablespoon
             [amount] => 2
         )
         [20] => Array (
             [id] => 20
             [name] => chocolate powder
             [type] => lipid
             [measurement] => Tablespoon
             [amount] => 2
          )
          [38] => Array (
              [id] => 38
              [name] => chocolate square
              [type] => lipid
              [measurement] => 
              [amount] => 1
          )
      )
  )

---

你离这里不远，但你感兴趣的一切都在里面，这样你就不会涉及到水果和蛋白质等

$courses = [];
foreach( $array as $sub){
    foreach ($sub as $item) {
        if ( array_key_exists($item['id'], $courses) ) {
            // dup, so just add to the amount
            $courses[$item['id']]['amount'] += $item['amount'];
        } else {
            //New entry
            $courses[$item['id']] = $item;
        }
    }
}

// if its important to have indexes starting at 0 for the result
$courses = array_values($courses);

---

如果数组

$courses

与此相关，它看起来是什么like@RiggsFolly

$courses

看起来像输出数组？哦，是的，我真傻]@riggsfully编辑过，也许它更可读