PHP组多维数组？

预期产出：

$arr = Array
    (
    Array(
            "id" => "1",
            "player_name" => "Jack",
            "type" => "Arcades",
            "high_score"=> "10000",
            "score"=> "500",
        ),
    Array(
            "id" => "1",
            "player_name" => "Jack",
            "type" => "Racing",
            "high_score"=> "12000",
            "score"=> "700",
        ),
    Array(
            "id" => "2",
            "player_name" => "Steve",
            "type" => "Racing",
            "high_score"=> "10000",
            "score"=> "400",
        ),
    Array(
            "id" => "2",
            "player_name" => "Steve",
            "type" => "Arcades",
            "high_score"=> "12000",
            "score"=> "600",
        ),
    Array(
            "id" => "2",
            "player_name" => "Steve",
            "type" => "Casual",
            "high_score"=> "14000",
            "score"=> "650",
        ),
    Array(
            "id" => "2",
            "player_name" => "Steve",
            "type" => "Strategy",
            "high_score"=> "10000",
            "score"=> "500",
        ),
    );

我对如何使用多维数组将数组按预期输出分组感到困惑。我的前辈建议我使用多维数组，因为我已经尝试过很多次了，但我不知道如何对数组进行分组，有人能帮我吗

试试这个：

$arr = Array (
    '1'=>
    Array(
            "id" => "1",
            "player_name" => "Jack",
            "type" => "Arcades,Racing",
            "high_score"=> "12000",
            "score"=> "1200",
        ),
    '2'=>
    Array(
            "id" => "2",
            "player_name" => "Steve",
            "type" => "Racing,Arcades,Casual,Strategy",
            "high_score"=> "14000",
            "score"=> "2150",
        ),
  );

foreach($arr as $val)
{
  $newarray[$val['id']]['id']=$val['id'];
   $newarray[$val['id']]['player_name']=$val['player_name'];
    $newarray[$val['id']]['type']=isset($newarray[$val['id']]['type'])?$newarray[$val['id']]['type'].','.$val['type']:$val['type'];
     $newarray[$val['id']]['high_score']=$val['high_score'];  
      $newarray[$val['id']]['score']=isset($newarray[$val['id']]['score'])?$val['score']+$newarray[$val['id']]['score']:$val['score'];  
}
 print_r($newarray);

这是你的解决方案

$res = [];
$highScore = [];
$type = [];
$score= [];
foreach($arr as $val){
    $highScore[$val['player_name']][] = $val['high_score'];
    $type[$val['player_name']][] = $val['type'];
    $score[$val['player_name']][] = $val['score'];
    $res[$val['id']] = $val;        
    $res[$val['id']]['high_score'] = !empty($highScore[$val['player_name']])? max($highScore[$val['player_name']]) : '';
    $res[$val['id']]['type'] = !empty($type[$val['player_name']]) ? implode(',',$type[$val['player_name']]) : '';
    $res[$val['id']]['score'] = !empty($score[$val['player_name']]) ? array_sum($score[$val['player_name']]) : 0;
}
echo '<pre>'; print_r($res);

$res=[]；
$highScore=[]；
$type=[]；
$score=[]；
外汇（$arr作为$val）{
$highScore[$val['player_name']][=$val['high_score']；
$type[$val['player_name'][]=$val['type']；
$score[$val['player_name'][]=$val['score']；
$res[$val['id']]=$val；
$res[$val['id']['high_score']=！empty（$highScore[$val['player_name']]）？max（$highScore[$val['player_name']]）：“”；
$res[$val['id']['type']=！empty（$type[$val['player\u name']]）？内爆（“，”，$type[$val['player\u name']]）：”；
$res[$val['id']['score']=！空（$score[$val['player\u name']]）？数组求和（$score[$val['player\u name']]）：0；
}
回声'；印刷品(港币);；

@nice。。。但是这会给ID2带来10000分的高分，这是14000分，但总体上是简短而快速的：）+1分的简短回答也可以在每次迭代中用一个条件检查高分，但是如果我添加另一个数组，比如：-数组（“id”=>“1”，“玩家名”=>“Mark”，“键入”=>“Racing”，“高分”=>“12000”，“分数”=>“500”），第一个记录名成为Mark，有没有想法将组1数组分隔为2个记录，即组1有2个记录，例如jack和Mark？

Array
(
    [1] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [player_name] => Jack
                    [type] => Arcades,Racing
                    [high_score] => 12000
                    [score] => 1200
                )

        )

    [2] => Array
        (
            [0] => Array
                (
                    [id] => 2
                    [player_name] => Steve
                    [type] => Racing,Arcades,Casual,Strategy
                    [high_score] => 14000
                    [score] => 2150
                )

        )

)

$res = [];
$highScore = [];
$type = [];
$score= [];
foreach($arr as $val){
    $highScore[$val['player_name']][] = $val['high_score'];
    $type[$val['player_name']][] = $val['type'];
    $score[$val['player_name']][] = $val['score'];
    $res[$val['id']] = $val;        
    $res[$val['id']]['high_score'] = !empty($highScore[$val['player_name']])? max($highScore[$val['player_name']]) : '';
    $res[$val['id']]['type'] = !empty($type[$val['player_name']]) ? implode(',',$type[$val['player_name']]) : '';
    $res[$val['id']]['score'] = !empty($score[$val['player_name']]) ? array_sum($score[$val['player_name']]) : 0;
}
echo '<pre>'; print_r($res);