Question

我有一系列的条目,按年月分列如下。我需要区分这种阵列,以便逐年按类别分类条目。

Array
(
    [Oct 2011] => Array
        (
            [0] => Array
                (
                    [title] => CAD Drawing Updates
                    [file] => /gm-June2010-driver.pdf
                    [category] => Windows
                )
        )


    [Sep 2011] => Array
        (
            [0] => Array
                (
                    [title] => title
                    [file] => /gm-June2010-driver.pdf
                    [category] => Windows
                )

            [1] => Array
                (
                    [title] => edges
                    [file] => /gm-June2010-driver.pdf
                    [category] =>Walling
                )

            [2] => Array
                (
                    [title] => Specification update
                    [file] => /gm-June2010-driver.pdf
                    [category] => Windows
                )
        )
)

因此,这是我之后的一件事。

Array
(
    [Oct 2011] => Array
        (
                [Windows] => Array
                        (
                            [0] => Array
                                (
                                    [title] => CAD Drawing Updates
                                    [file] => /gm-June2010-driver.pdf
                                )                       
                        )
        )


    [Sep 2011] => Array
        (
                [Windows] => Array
                                (
                            [0] => Array
                                (
                                    [title] => title
                                    [file] => /gm-June2010-driver.pdf
                                    [category] => Windows
                                )


                            [1] => Array
                                (
                                    [title] => Specification update
                                    [file] => /gm-June2010-driver.pdf
                                    [category] => Windows
                                )                                                               
                                )   
                [Walling] => Array
                                (
                            [0] => Array
                                (
                                    [title] => edges
                                    [file] => /gm-June2010-driver.pdf
                                    [category] => Curtain Walling
                                )                                                               
                                )                                            
        )
)

I m not sure if this is a job for the sort functions, any help would be appreciated, thanks.

Answer 1

如果没有这种功能,你就必须通过你原来的阵列,用nes的 for子,建立新的阵列。

$newArr = array();
foreach($arr as $month => items) {
  foreach($items as $data) {
    $newArr[$month][$data["category"]][] = $data;
  }
}

Answer 2

你们不想打造,而只是要重新命名钥匙。 PHP 轨道并不直接支持改名钥匙,因此,你需要首先建立一个新的阵列,以新的钥匙为基础,同时保持现有的价值。

最终,你可以把原来的阵列替换为:

$rekeyed = array();
foreach($array as $monthYear => &$value)
{
    $r = sscanf($monthYear,  %s %d , $month, $year);
    if ($r != 2) throw new Exception(sprintf( Invalid Key "%s". , $monthYear));
    $categories = array();
    foreach($value as &$item)
    {
        $category =& $item[ category ];
        unset($item[ category ]);
        $categories[$category][] =& $item;
    }
    unset($item);
    $value =& $categories;
    unset($categories);    
    $rekeyed[$year][$month] =& $value;
}
unset($value);
$array =& $rekeyed;
unset($rekeyed);
print_r($array);

产出:

Array
(
    [2011] => Array
        (
            [Oct] => Array
                (
                    [Windows] => Array
                        (
                            [0] => Array
                                (
                                    [title] => CAD Drawing Updates
                                    [file] => /gm-June2010-driver.pdf
                                )

                        )

                )

            [Sep] => Array
                (
                    [Windows] => Array
                        (
                            [0] => Array
                                (
                                    [title] => title
                                    [file] => /gm-June2010-driver.pdf
                                )

                        )

                    [Walling] => Array
                        (
                            [0] => Array
                                (
                                    [title] => edges
                                    [file] => /gm-June2010-driver.pdf
                                )

                        )

                )

        )

)

rel=“nofollow>

Answer 3

我认为,你应该发挥什么作用是劝说。

http://www.php.net/manual/en/Function.uasort.php

第一,在主要阵列上,每个阵列元素在儿童阵列上 us。

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