如何在Laravel/PHP中创建多维数组 [英] How to create an multidimensional array in Laravel/PHP
本文介绍了如何在Laravel/PHP中创建多维数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试将一些值存储在一个数组中,其中每个元素都有其子元素.
I'm trying to store some values in one array, where each element has its child element.
请找到代码:
$children = $user->relations()->wherePlanId($selectplan)->get();
foreach($children as $ch)
{
$child[] = $ch->pivot->child;
$subuser = User::find($ch->pivot->child);
if($subuser){
$subchildren = $subuser->relations()->wherePlanId($selectplan)->get();
foreach($subchildren as $subchild)
{
$subchildid[] = $subchild->pivot->child;
}
}
else
{
$subchildid[] = NULL;
}
}
我想存储类似child['parent_element']['child_element']
的内容
即预期的数组格式
I want to store something like child['parent_element']['child_element']
i.e expected array format
child[1][2]
child[1][3]
child[1][4]
child[1][5]
child[2][6]
child[2][7]
.
.
child[3][12]
帮帮我.谢谢
推荐答案
假设您的表数据为
tblusers
id name
1 John
2 Doe
3 Carl
4 Jose
5 Bill
6 James
7 Karl
tblparents
id parent child
1 1 2
2 1 3
3 1 4
4 1 5
5 2 6
6 2 7
首先:声明一个变量,该变量将存储您的数组
First: declare a variable which will store your array
$child_arr = [];
然后循环您的父数组
foreach($children as $ch) {
// do something
}
在您的父循环中,孩子是您的父循环
Inside the loop of your parent loop the children your loop parent
foreach($subchildren as $subchild) {
$child_arr['your parent id']['your child id'] = 'your desired value';
}
所以您的代码将是这样
$child_arr = [];
$children = $user->relations()->wherePlanId($selectplan)->get();
foreach($children as $ch) {
$parent_id = $ch->pivot->child;
$subuser = User::find($ch->pivot->child);
if($subuser) {
$subchildren = $subuser->relations()->wherePlanId($selectplan)->get();
foreach($subchildren as $subchild) {
$child_id = $subchild->pivot->child;
$child_arr[$parent_id][$child_id] = $subchild;
}
} else {
$child_arr[$parent_id] = null;
}
}
结果将是这样
array(
[1] => array(
[2] => 'value',
[3] => 'value',
[4] => 'value',
[5] => 'value',
),
[2] => array(
[6] => 'value',
[7] => 'value'
),
etc...
)
或者您可以将'value'
留给true
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