Online PHP editor | refs for gPFQF

<?php $data = [ ['id'=> 1,'name'=>'イワーク','place'=>'渓谷,洞窟','level' => 10,'technique'=>'岩雪崩'], ['id'=> 1,'name'=>'イワーク','place'=>'砂漠,山頂','level' => 20,'technique'=>'岩石砲'], ['id'=> 2,'name'=>'ハガネール','place'=>'鉱山,地中','level' => 10,'technique'=>'メテオドライブ'], ['id'=> 2,'name'=>'ハガネール','place'=>'丘陵,窪地','level' => 20,'technique'=>'アイアンローラー'], ]; $places = array_reduce($data, function ($carry, $item) { ['id' => $id, 'level' => $level, 'technique' => $technique] = $item; array_push($carry[$id]['place_list'], ...explode(',', $item['place'])); $carry[$id]['lv_list'][$level] = compact('level', 'technique'); return $carry; }, array_map(fn($a) => ['id' => $a['id'], 'name' => $a['name'], 'place_list' => [], 'lv_list' => []], array_column($data, null, 'id'))); var_dump($places);