PHP / PHP 7.4 / 编程语言
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在 PHP 7.4 中重新索引多维数组的重构实现

由永夜 · 2022/05/16

1、查看现有实现代码如下：

$data = $res['body']['data'];
print_r($data);
$data = array_combine(array_column($data, 'name'), $data);
print_r($data);
exit;

2、查看多维数组索引前后的打印结果。使用数组中 name 列的值作为新的键。如图1

查看多维数组索引前后的打印结果。使用数组中 name 列的值作为新的键

图1

Array
(
    [0] => Array
        (
            [id] => 8
            [user_id] => 6659
            [name] => athena
            [status] => published
            [title_en] => Athena
            [title_cn] => 雅典娜
            [description_en] => Athena is a template with massive decoration modules. Its social, festive, interactive elements can make a  strong impact. Meanwhile, it is committed to creating a unique shopping experience on mobile phones. Suitable for all middle and high-end brands.
            [description_cn] => Athena是一款装修模块极其丰富的模板，以社交、节日气氛、页面交互等元素带来极强的冲击，同时致力于打造移动端独特的购物体验，适合中高端品牌站。
            [cover] => http://172.16.12.250:30005/linkun/saas/WA2RbFlR6BxR2Gw6845nWZDtRdsZMZlXbaFBzrl2.png
        )

    [1] => Array
        (
            [id] => 7
            [user_id] => 6659
            [name] => vogue
            [status] => published
            [title_en] => Vogue
            [title_cn] => Vogue
            [description_en] => Vogue adds a video module that can fully display product details. It is a set of templates designed specifically for brand and product stories.
            [description_cn] => Vogue 模板增加了视频模块，可以全面的展示产品细节，是专为品牌和产品故事而设计的一套模板。
            [cover] => http://172.16.12.250:30005/linkun/saas/EXGY62GLqebTEVoEDS19ynVxGmlktoCUFYCZGmom.png
        )

    [2] => Array
        (
            [id] => 6
            [user_id] => 
            [name] => venue
            [status] => published
            [title_en] => Volume
            [title_cn] => Volume
            [description_en] => Volume uses a clean design style and adds a picture and text module, which is very suitable for high-end brand products.
            [description_cn] => Volume模板使用干净的设计风格，增加了图片文字模块，非常适合高端品牌产品。
            [cover] => http://172.16.12.250:30005/linkun/saas/nPVwmFPGMUvOa8hVvlfabKspjzbQ8C0oQHUrm2YP.png
        )

    [3] => Array
        (
            [id] => 5
            [user_id] => 6659
            [name] => showtime
            [status] => published
            [title_en] => showtime
            [title_cn] => showtime
            [description_en] => showtime
            [description_cn] => showtime
            [cover] => http://172.16.12.250:30005/linkun/saas/dKtQRxcmKgbQkyrfstqiWKKtVYQ8zKHNYP6SOh8D.png
        )

    [4] => Array
        (
            [id] => 4
            [user_id] => 6659
            [name] => basic
            [status] => published
            [title_en] => Basic
            [title_cn] => Basic
            [description_en] => Basic is our iconic template, very versatile and concise, suitable for most styles of shops.
            [description_cn] => Basic 是我们标志性的模板，非常通用以及简洁，适合大部分风格的店铺。
            [cover] => http://172.16.12.250:30005/linkun/saas/r9On4359aPYErGWBikYnJNtd2w7qwrEIefmzs7Qp.png
        )

    [5] => Array
        (
            [id] => 3
            [user_id] => 6659
            [name] => showcase
            [status] => published
            [title_en] => showcase
            [title_cn] => showcase
            [description_en] => showcase
            [description_cn] => showcase
            [cover] => http://172.16.12.250:30005/linkun/saas/kAR3fGb1RAWlAoQM88JApY2yg4GJn1ubMX9Duz05.png
        )

    [6] => Array
        (
            [id] => 2
            [user_id] => 6659
            [name] => volume
            [status] => published
            [title_en] => volume
            [title_cn] => volume
            [description_en] => volume
            [description_cn] => volume
            [cover] => http://172.16.12.250:30005/linkun/saas/kcvOpGTaItgeN0DH7Ogs91LWgWx0jTqD2usTn0Wz.png
        )

    [7] => Array
        (
            [id] => 1
            [user_id] => 6659
            [name] => test
            [status] => published
            [title_en] => test
            [title_cn] => test
            [description_en] => test
            [description_cn] => test
            [cover] => http://172.16.12.250:30005/linkun/saas/1v0wvIy5XQNIo2y4yJE4AycO8zt1jpNawBN14NPu.png
        )

)
Array
(
    [athena] => Array
        (
            [id] => 8
            [user_id] => 6659
            [name] => athena
            [status] => published
            [title_en] => Athena
            [title_cn] => 雅典娜
            [description_en] => Athena is a template with massive decoration modules. Its social, festive, interactive elements can make a  strong impact. Meanwhile, it is committed to creating a unique shopping experience on mobile phones. Suitable for all middle and high-end brands.
            [description_cn] => Athena是一款装修模块极其丰富的模板，以社交、节日气氛、页面交互等元素带来极强的冲击，同时致力于打造移动端独特的购物体验，适合中高端品牌站。
            [cover] => http://172.16.12.250:30005/linkun/saas/WA2RbFlR6BxR2Gw6845nWZDtRdsZMZlXbaFBzrl2.png
        )

    [vogue] => Array
        (
            [id] => 7
            [user_id] => 6659
            [name] => vogue
            [status] => published
            [title_en] => Vogue
            [title_cn] => Vogue
            [description_en] => Vogue adds a video module that can fully display product details. It is a set of templates designed specifically for brand and product stories.
            [description_cn] => Vogue 模板增加了视频模块，可以全面的展示产品细节，是专为品牌和产品故事而设计的一套模板。
            [cover] => http://172.16.12.250:30005/linkun/saas/EXGY62GLqebTEVoEDS19ynVxGmlktoCUFYCZGmom.png
        )

    [venue] => Array
        (
            [id] => 6
            [user_id] => 
            [name] => venue
            [status] => published
            [title_en] => Volume
            [title_cn] => Volume
            [description_en] => Volume uses a clean design style and adds a picture and text module, which is very suitable for high-end brand products.
            [description_cn] => Volume模板使用干净的设计风格，增加了图片文字模块，非常适合高端品牌产品。
            [cover] => http://172.16.12.250:30005/linkun/saas/nPVwmFPGMUvOa8hVvlfabKspjzbQ8C0oQHUrm2YP.png
        )

    [showtime] => Array
        (
            [id] => 5
            [user_id] => 6659
            [name] => showtime
            [status] => published
            [title_en] => showtime
            [title_cn] => showtime
            [description_en] => showtime
            [description_cn] => showtime
            [cover] => http://172.16.12.250:30005/linkun/saas/dKtQRxcmKgbQkyrfstqiWKKtVYQ8zKHNYP6SOh8D.png
        )

    [basic] => Array
        (
            [id] => 4
            [user_id] => 6659
            [name] => basic
            [status] => published
            [title_en] => Basic
            [title_cn] => Basic
            [description_en] => Basic is our iconic template, very versatile and concise, suitable for most styles of shops.
            [description_cn] => Basic 是我们标志性的模板，非常通用以及简洁，适合大部分风格的店铺。
            [cover] => http://172.16.12.250:30005/linkun/saas/r9On4359aPYErGWBikYnJNtd2w7qwrEIefmzs7Qp.png
        )

    [showcase] => Array
        (
            [id] => 3
            [user_id] => 6659
            [name] => showcase
            [status] => published
            [title_en] => showcase
            [title_cn] => showcase
            [description_en] => showcase
            [description_cn] => showcase
            [cover] => http://172.16.12.250:30005/linkun/saas/kAR3fGb1RAWlAoQM88JApY2yg4GJn1ubMX9Duz05.png
        )

    [volume] => Array
        (
            [id] => 2
            [user_id] => 6659
            [name] => volume
            [status] => published
            [title_en] => volume
            [title_cn] => volume
            [description_en] => volume
            [description_cn] => volume
            [cover] => http://172.16.12.250:30005/linkun/saas/kcvOpGTaItgeN0DH7Ogs91LWgWx0jTqD2usTn0Wz.png
        )

    [test] => Array
        (
            [id] => 1
            [user_id] => 6659
            [name] => test
            [status] => published
            [title_en] => test
            [title_cn] => test
            [description_en] => test
            [description_cn] => test
            [cover] => http://172.16.12.250:30005/linkun/saas/1v0wvIy5XQNIo2y4yJE4AycO8zt1jpNawBN14NPu.png
        )

)

3、但是，仅使用函数 array_column 就足以实现了。当 column_key 为 null 时，此时将返回整个数组（配合 index_key 参数来重新索引数组时非常好用）。没有必要再使用额外的函数 array_combine。

$data = $res['body']['data'];
// print_r($data);
// $data = array_combine(array_column($data, 'name'), $data);
$data = array_column($data, null, 'name');
print_r($data);
exit;

4、查看多维数组索引前后的打印结果。符合预期。如图2

查看多维数组索引前后的打印结果。符合预期

图2

Array
(
    [athena] => Array
        (
            [id] => 8
            [user_id] => 6659
            [name] => athena
            [status] => published
            [title_en] => Athena
            [title_cn] => 雅典娜
            [description_en] => Athena is a template with massive decoration modules. Its social, festive, interactive elements can make a  strong impact. Meanwhile, it is committed to creating a unique shopping experience on mobile phones. Suitable for all middle and high-end brands.
            [description_cn] => Athena是一款装修模块极其丰富的模板，以社交、节日气氛、页面交互等元素带来极强的冲击，同时致力于打造移动端独特的购物体验，适合中高端品牌站。
            [cover] => http://172.16.12.250:30005/linkun/saas/WA2RbFlR6BxR2Gw6845nWZDtRdsZMZlXbaFBzrl2.png
        )

    [vogue] => Array
        (
            [id] => 7
            [user_id] => 6659
            [name] => vogue
            [status] => published
            [title_en] => Vogue
            [title_cn] => Vogue
            [description_en] => Vogue adds a video module that can fully display product details. It is a set of templates designed specifically for brand and product stories.
            [description_cn] => Vogue 模板增加了视频模块，可以全面的展示产品细节，是专为品牌和产品故事而设计的一套模板。
            [cover] => http://172.16.12.250:30005/linkun/saas/EXGY62GLqebTEVoEDS19ynVxGmlktoCUFYCZGmom.png
        )

    [venue] => Array
        (
            [id] => 6
            [user_id] => 
            [name] => venue
            [status] => published
            [title_en] => Volume
            [title_cn] => Volume
            [description_en] => Volume uses a clean design style and adds a picture and text module, which is very suitable for high-end brand products.
            [description_cn] => Volume模板使用干净的设计风格，增加了图片文字模块，非常适合高端品牌产品。
            [cover] => http://172.16.12.250:30005/linkun/saas/nPVwmFPGMUvOa8hVvlfabKspjzbQ8C0oQHUrm2YP.png
        )

    [showtime] => Array
        (
            [id] => 5
            [user_id] => 6659
            [name] => showtime
            [status] => published
            [title_en] => showtime
            [title_cn] => showtime
            [description_en] => showtime
            [description_cn] => showtime
            [cover] => http://172.16.12.250:30005/linkun/saas/dKtQRxcmKgbQkyrfstqiWKKtVYQ8zKHNYP6SOh8D.png
        )

    [basic] => Array
        (
            [id] => 4
            [user_id] => 6659
            [name] => basic
            [status] => published
            [title_en] => Basic
            [title_cn] => Basic
            [description_en] => Basic is our iconic template, very versatile and concise, suitable for most styles of shops.
            [description_cn] => Basic 是我们标志性的模板，非常通用以及简洁，适合大部分风格的店铺。
            [cover] => http://172.16.12.250:30005/linkun/saas/r9On4359aPYErGWBikYnJNtd2w7qwrEIefmzs7Qp.png
        )

    [showcase] => Array
        (
            [id] => 3
            [user_id] => 6659
            [name] => showcase
            [status] => published
            [title_en] => showcase
            [title_cn] => showcase
            [description_en] => showcase
            [description_cn] => showcase
            [cover] => http://172.16.12.250:30005/linkun/saas/kAR3fGb1RAWlAoQM88JApY2yg4GJn1ubMX9Duz05.png
        )

    [volume] => Array
        (
            [id] => 2
            [user_id] => 6659
            [name] => volume
            [status] => published
            [title_en] => volume
            [title_cn] => volume
            [description_en] => volume
            [description_cn] => volume
            [cover] => http://172.16.12.250:30005/linkun/saas/kcvOpGTaItgeN0DH7Ogs91LWgWx0jTqD2usTn0Wz.png
        )

    [test] => Array
        (
            [id] => 1
            [user_id] => 6659
            [name] => test
            [status] => published
            [title_en] => test
            [title_cn] => test
            [description_en] => test
            [description_cn] => test
            [cover] => http://172.16.12.250:30005/linkun/saas/1v0wvIy5XQNIo2y4yJE4AycO8zt1jpNawBN14NPu.png
        )

)

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标签： array_column array_combine column_key index_key PHP 7.4 多维数组重新索引重构

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