在 Laravel 6 中，基于 数组相关函数 操作数组后，同样的输入，在不同执行顺序下的差异的分析（include、引用）
1、PHP 文件的代码实现如下
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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | <?phpuse Illuminate\Support\Arr;use Illuminate\Support\Facades\Log;Log::info( 'v2.1.3_migrate_index.php_schema_0', [ 'schema' => $schema ]);$settings = ['text_color', 'mask_opacity', 'button_text_color', 'button_background_color'];if (Arr::has($schema, 'sections')) { foreach ($schema['sections'] as $sectionKey => $section) { if (Arr::get($section, 'type') == 'multi-column') { foreach ($settings as $setting) { if (Arr::has($section, 'settings.' . $setting)) { if ($setting == 'mask_opacity') { $value = (bool)Arr::get($section, 'settings.' . $setting); } else { $value = Arr::get($section, 'settings.' . $setting); } foreach ($section['blocks'] as $blockKey => $block) { Arr::set($schema, 'sections.' . $sectionKey . '.blocks.' . $blockKey . '.settings.' . $setting, $value); } Arr::forget($schema, 'sections.' . $sectionKey . '.settings.' . $setting); } } } }}Log::info( 'v2.1.3_migrate_index.php_schema_1', [ 'schema' => $schema ]);return $schema; |
2、初始的 $schema ，即 [2023-05-17 09:45:23] local.INFO: v2.1.3_migrate_index.php_schema_0 ，其值如下
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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | { "schema": { "sections": { "4imagetext_t0upqwh3": { "type": "multi-column", "disabled": false, "settings": { "heading": "", "heading_align": "center", "text_color": "#000", "image_size": "auto", "mask_opacity": 0, "button_text_color": "#000", "button_background_color": "#fff", "text_align": "center" }, "blocks": { "column-0": { "type": "column", "settings": { "heading": "IMAGE WITH TEXT", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "mobile_image": "", "url": "/", "label": "MORE INFO" } }, "column-1": { "type": "column", "settings": { "heading": "IMAGE WITH TEXT", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "mobile_image": "", "url": "/", "label": "MORE INFO" } }, "column-2": { "type": "column", "settings": { "heading": "IMAGE WITH TEXT", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "mobile_image": "", "url": "/", "label": "MORE INFO" } } }, "block_order": [ "column-0", "column-1", "column-2" ] } }, "order": [ "4imagetext_t0upqwh3" ] }} |
3、但是，返回的 $schema ，即 [2023-05-17 09:45:23] local.INFO: v2.1.3_migrate_index.php_schema_1 ，不符合预期。其数据有丢失。在 sections.4imagetext_t0upqwh3 中的字段：type、settings、block_order 等皆已经丢失。如图1
![但是，返回的 $schema ，即 [2023-05-17 09:45:23] local.INFO: v2.1.3_migrate_index.php_schema_1 ，不符合预期。其数据有丢失。在 sections.4imagetext_t0upqwh3 中的字段：type、settings、block_order 等皆已经丢失。](https://www.shuijingwanwq.com/wp-content/uploads/2023/06/1-6.png)
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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | { "schema": { "sections": { "4imagetext_t0upqwh3": { "blocks": { "column-0": { "settings": { "button_background_color": "#fff" } }, "column-1": { "settings": { "button_background_color": { "blocks": { "column-0": { "settings": { "button_background_color": "#fff" } } } } } }, "column-2": { "settings": { "button_background_color": { "blocks": { "column-0": { "settings": { "button_background_color": "#fff" } }, "column-1": { "settings": { "button_background_color": { "blocks": { "column-0": { "settings": { "button_background_color": "Over 15 levels deep, aborting normalization" } } } } } } } } } } } } }, "order": [ "4imagetext_t0upqwh3" ] }} |
4、但是，仅执行此 PHP 文件，返回的 $schema 是符合预期的。第 3 步骤的执行不符合预期，根源应该在于执行此 PHP 文件之前的某处影响到了这个 PHP 文件的执行。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | { "schema": { "schema": { "order": [ "4imagetext_t0upqwh3" ], "sections": { "4imagetext_t0upqwh3": { "type": "multi-column", "blocks": { "column-0": { "type": "column", "settings": { "url": "/", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "label": "MORE INFO", "heading": "IMAGE WITH TEXT", "mobile_image": "" } }, "column-1": { "type": "column", "settings": { "url": "/", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "label": "MORE INFO", "heading": "IMAGE WITH TEXT", "mobile_image": "" } }, "column-2": { "type": "column", "settings": { "url": "/", "text": "Use these blocks to share your brand's story. You can focus on a particular collection, a product detail, or even embed a video.", "label": "MORE INFO", "heading": "IMAGE WITH TEXT", "mobile_image": "" } } }, "disabled": false, "settings": { "heading": "", "image_size": "auto", "text_align": "center", "text_color": "#000", "mask_opacity": 0, "heading_align": "center", "button_text_color": "#000", "button_background_color": "#fff" }, "block_order": [ "column-0", "column-1", "column-2" ] } } } }} |
5、最终确认了原因，是因为在执行此 PHP 文件之前，执行了另一个 PHP 文件，在另一个 PHP 文件中使用了引用：&$value。两个 PHP 文件的依次执行是使用的 include 。
1 2 3 4 5 6 7 8 9 10 11 12 | <?phpuse Illuminate\Support\Arr;if (Arr::has($schema, 'sections')){ foreach ($schema['sections'] as &$value) { // ... }}return $schema; |
6、将 $value 替换为 $sectionSettingValue，临时规避掉引用的变量名重名的问题。
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