Question

好的，我很难过并尝试了很多解决方案，但我无法让它发挥作用。现在给这个放了几个小时，但仍然没有。

我有一个如下所示的数组：$data['dietcontent'][1][1][1]

$data['dietcontent'][1][1][1]
--------------------^Day^Meal^Line

这个数组，我想为他们的MealTime排序，它存在于$data['dietcontent'][1][1][1].MealTime

3d数组采用以下格式：

$data['dietcontent'][1][$mealNumber][$mealLine]['MealTime'].

$ mealNumber可以是1到7， $ mealLine可以是1到7

好的，这很难解释。结构可以做得更好，但是因为我只是从中解决了，所以我什么都不做。

所以我不想解释，而是想给你一个现在看起来如何的例子，以及我希望它看起来如何。

以下是一个例子：

$data['dietcontent'][1][1][1]['MealTime'] // is 07:00
$data['dietcontent'][1][1][2]['MealTime'] // is 07:00
$data['dietcontent'][1][1][3]['MealTime'] // is 07:00
$data['dietcontent'][1][1][4]['MealTime'] // is 07:00
$data['dietcontent'][1][1][5]['MealTime'] // is 07:00
$data['dietcontent'][1][1][6]['MealTime'] // is 07:00
$data['dietcontent'][1][1][7]['MealTime'] // is 07:00
$data['dietcontent'][1][2][1]['MealTime'] // is 01:30
$data['dietcontent'][1][2][2]['MealTime'] // is 01:30
$data['dietcontent'][1][2][3]['MealTime'] // is 01:30
$data['dietcontent'][1][2][4]['MealTime'] // is 01:30
$data['dietcontent'][1][2][5]['MealTime'] // is 01:30
$data['dietcontent'][1][2][6]['MealTime'] // is 01:30
$data['dietcontent'][1][2][7]['MealTime'] // is 01:30

它是怎么样的。现在我想在MealTime之后对这个数组中的$ mealNumber（第二个[]）位置进行排序。所以它会在这之后看起来像这样：

$data['dietcontent'][1][1][1]['MealTime'] // is 01:30
$data['dietcontent'][1][1][2]['MealTime'] // is 01:30
$data['dietcontent'][1][1][3]['MealTime'] // is 01:30
$data['dietcontent'][1][1][4]['MealTime'] // is 01:30
$data['dietcontent'][1][1][5]['MealTime'] // is 01:30
$data['dietcontent'][1][1][6]['MealTime'] // is 01:30
$data['dietcontent'][1][1][7]['MealTime'] // is 01:30
$data['dietcontent'][1][2][1]['MealTime'] // is 07:00
$data['dietcontent'][1][2][2]['MealTime'] // is 07:00
$data['dietcontent'][1][2][3]['MealTime'] // is 07:00
$data['dietcontent'][1][2][4]['MealTime'] // is 07:00
$data['dietcontent'][1][2][5]['MealTime'] // is 07:00
$data['dietcontent'][1][2][6]['MealTime'] // is 07:00
$data['dietcontent'][1][2][7]['MealTime'] // is 07:00

我该怎么做？！非常感谢您的帮助!!

Answer 1

foreach($data['dietcontent'] as &$day){
    //create temp sorting array
    $mealsArr = array();
    foreach($day as $meal){
        $i = 1;
        foreach($meal as $line){
            //put the lines into the temp array using meal time as key
            $mealsArr[$line['MealTime']][$i] = $line;
            $i++;
        }
    }        
    //sort the array by key (meal time!)
    ksort($mealsArr);
    //set up the new meals in the same format as before
    $newMeals = array();
    $i = 1;
    foreach($mealsArr as $lines){
        $newMeals[$i] = $lines;
        $i++;
    }
    //put back the new lines
    $day = $newMeals;
}

修改：设置错误的密钥

在PHP中以3 dim数组排序数组

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