在PHP中对3个暗淡数组中的数组进行排序[重复]

Question

好的，我真的很难过，尝试了很多解决方案，但我无法让它发挥作用。现在放弃了几个小时，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，我想整理出他们的 MealTime，它存在于$data['dietcontent'][1][1][1].MealTime

3d 数组的格式如下：

$data['dietcontent'][1][$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，但由于我只是从中锻炼，我无能为力。

所以我不想解释，而是想给你一个例子，说明它现在的样子，以及我希望它是什么样子。

这是一个例子：

$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

是它的样子。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;
}

编辑：设置错误的键