CODEWITHSUNDEEP
phparrays
Rough
Rough

Reputation: 366

Add child array to every item of an array

I have a parent array called $list, and when I var_dump($list); this is the result:

array (size=10)
  0 => 
    array (size=4)
      'id' => string '6' (length=1)
      'title' => string 'Title #1' (length=7)
  1 =>
    array (size=4)
      'id' => string '10' (length=2)
      'title' => string 'Title x' (length=7)

  ...

  9 => 
    array (size=4)
      'id' => string '2' (length=1)
      'title' => string 'Title y' (length=3)

As you see i have two keys 'id' and 'title'.

I want to add another multidimensional array as an third key named 'children'

I am able to get data of 'children' with my function named GetChildrenById($id);

But i don't know how to add this array as a third key and name the key 'children'

*

I tried to reach every children by foreach loop but i need result as a big array.

How to achieve this?

Upvotes: 0

Views: 1803

Answers (1)

Casimir et Hippolyte
Casimir et Hippolyte

Reputation: 89557

You probably need that:

foreach ($list as &$v) {
    $v['children'] = GetChildrenById($v['id']);
}

The & before $v indicates that $v is a reference to a $list item and not a copy. Consequence, when you apply a change to $v, the $list item is modified.

But you can also use the array indexes like that:

foreach ($list as $k => $v) {
    $list[$k]['children'] = GetChildrenById($v['id']);
}

Upvotes: 2

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