在 PHP 中重命名数组键名的实现(基于函数 array_map)
1、现有的数组结构如下，其键名为小写字母加下划线的形式。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | [ [ [id] => 97 [theme_id] => vogue [version] => [asset_key] => assets\iconfont\iconfont.css [mime_type] => text/plain [category] => unknown [schema] => [created_at] => 2022-01-20 10:05:24 [updated_at] => 2022-01-20 10:05:24 ] [ [id] => 98 [theme_id] => vogue [version] => [asset_key] => assets\iconfont\iconfont.js [mime_type] => text/plain [category] => unknown [schema] => [created_at] => 2022-01-20 10:05:24 [updated_at] => 2022-01-20 10:05:24 ]] |
2、期望将数组键名调整为驼峰的形式，传统的方式就是基于 foreach 遍历，生成一个新的键名为驼峰形式的数组。这一次计划基于函数 array_map 实现。为数组的每个元素应用回调函数。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | public function __invoke($rootValue, array $args, GraphQLContext $context, ResolveInfo $resolveInfo){ $themeId = $rootValue['themeAssets']['theme_id']; $themeAssets = ThemeAsset::where('theme_id', $themeId)->get()->toArray(); $func = function($themeAsset) { return [ 'id' => $themeAsset['id'], 'themeId' => $themeAsset['theme_id'], 'version' => $themeAsset['version'], 'content' => $themeAsset['content'], 'key' => str_replace("\\", "/", $themeAsset['asset_key']), 'mimeType' => $themeAsset['mime_type'], 'category' => $themeAsset['category'], 'schema' => $themeAsset['schema'], 'createdAt' => $themeAsset['created_at'], 'updatedAt' => $themeAsset['updated_at'], ]; }; $themeAssets = array_map($func, $themeAssets); return $themeAssets;} |
3、转换后的数组结构如下，其键名为驼峰形式。如图1
图1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | [ [ [id] => 97 [themeId] => vogue [version] => [key] => assets\iconfont\iconfont.css [mimeType] => text/plain [category] => unknown [schema] => [createdAt] => 2022-01-20 10:05:24 [updatedAt] => 2022-01-20 10:05:24 ] [ [id] => 98 [themeId] => vogue [version] => [key] => assets\iconfont\iconfont.js [mimeType] => text/plain [category] => unknown [schema] => [createdAt] => 2022-01-20 10:05:24 [updatedAt] => 2022-01-20 10:05:24 ]] |
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