Online PHP editor | refs for pRcC8

<?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'], ]; $result = []; foreach ($data as ['id' => $id, 'name' => $name, 'place' => $places, 'level' => $level, 'technique' => $technique]) { $result[$id] ??= compact('id', 'name'); $place_list = $result[$id]['place_list'] ?? []; $result[$id]['place_list'] = array_merge($place_list, explode(',', $places)); $result[$id]['lv_list'][$level] = compact('level', 'technique'); } var_dump($result);