如何在不循环的情况下重建我的数组？

Question

我想转换这个数组：

Array
(
    [0] => Array
    (
        [group] => site
        [key] => date_format
        [value] => %d %B %Y - %H:%M:%S
    )

    [1] => Array
    (
        [group] => site
        [key] => description
        [value] => blah
    )

    [2] => Array
    (
        [group] => site
        [key] => keywords
        [value] => 
    )

    [3] => Array
    (
        [group] => pages
        [key] => permalink
        [value] => <page>(/<subpage>)
    )

    [4] => Array
    (
        [group] => system
        [key] => plugins
        [value] => a:1:{i:0;s:5:"pages";}
    )

    [5] => Array
    (
        [group] => site
        [key] => title
        [value] => some title
     )
)

......对此...

Array
(
    [system] => Array
    (
        [plugins] => a:1:{i:0;s:5:"pages";}
    )

    [site] => Array
    (
        [date_format] => %d %B %Y - %H:%M:%S
        [description] => blah
        [keywords] => 
        [title] => some title
    )

    [pages] => Array
    (
        [permalink] => <page>(/<subpage>)
    )
)

如果没有foreach和任何其他循环，有没有办法做到这一点？

Answer 1

不，你不能。

这种微观优化将毫无意义。只需编写一个简单的foreach循环并停止尝试发明方形轮。