帮助整理这个数组 [英] help sorting this array

问题描述

所以我期待低于fk_page_id升序多维数组进行排序。没有人有任何指针。我认为usort（）是我要看看，但好像我找不到我的具体阵列结构的人。

 阵列
    （    [0] =＆GT;排列        （
            [标题] =＆GT;子页面的子页面！
            [ID] =＆GT;五
            [long_title] =＆GT;
            [fk_page_id] =＆GT; 4
        ）    [1] =＆GT;排列
        （
            [标题] =＆GT;关于我们子页面
            [ID] =＆GT; 4
            [long_title] =＆GT;
            [fk_page_id] =＆GT; 2
        ）    [2] =＆GT;排列
        （
            [标题] =＆GT;关于我们
            [ID] =＆GT; 2
            [long_title] =＆GT;
            [fk_page_id] =＆GT; 1
        ））
 

解决方案

如果你使用PHP 5.3 +

 定义（ASC，1）;
定义（DESC，-1）;功能colsort（$数组$关口，$为了= ASC）{
    usort（
        $阵列，
        功能（$ A，$ B）使用（$关口，$顺序）{
            返回STRCMP（$ A [$山坳]，$ B [$ COL]）* $秩序;
        }
    ）;
    返回$阵列;
}colsort（$ X'fk_page_id'）;
 

So I am looking to sort the multi dimensional array below by "fk_page_id" ascending. Does anyone have any pointers. I think usort() is where I have to look but it seems like I cant find anyone with my specific array structure.

Array
    (

    [0] => Array

        (
            [title] => subpage of subpage!
            [id] => 5
            [long_title] =>
            [fk_page_id] => 4                                
        )

    [1] => Array
        (
            [title] => about us subpage
            [id] => 4
            [long_title] => 
            [fk_page_id] => 2
        )

    [2] => Array
        (
            [title] => about us
            [id] => 2
            [long_title] => 
            [fk_page_id] => 1
        )

)

解决方案

if you're using PHP 5.3+:

define(ASC,1);
define(DESC,-1);

function colsort($array,$col,$order=ASC) {
    usort(
        $array,
        function($a,$b) use($col,$order) {
            return strcmp($a[$col],$b[$col])*$order;
        }
    );
    return $array;
}

colsort($x,'fk_page_id');

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