Accessing multidimensional Array, Laravel

Question

I am getting error Illegal offset type on next segment of code (the condition within foreach method is causing an error):

 $filter = [];
 foreach ($properties[array_keys($properties)] as $prop)
     array_add($filter, array_keys($prop), $prop->id);

And this is how $properties array look like. What I am trying to do is adding elements of array inside $properties into another array (etc. $filter['1'] = $properties['1']). The problem is that I never know how many elements (arrays) are going to be inside $properties and also I don't know what values are they going to be, so I can access them.

If there is an easier way to achieve this, feel free to write it down.

P.S. id is element of array in $properties.

Are you trying to copy the whole $properties variable into $filter? — Gordon Freeman
– Gordon Freeman, Commented Sep 10, 2018 at 12:27

Gordon Freeman · Accepted Answer · 2018-09-10 12:39:47Z

2

This does not seem like valid code to me. array_keys returns a new array which you are trying to use as a key to get a value out of $properties inside your foreach

Try this:

$filter = [];
foreach ($properties as $key => $prop)
    $filter[$key] = $prop['id'];

EDIT

If you only want the ids, i would recommend to use array_pluck.
It's one of laravels amazing helper functions

It would then look like this:

$filter = array_pluck($properties, 'id');

edited Sep 10, 2018 at 12:39

answered Sep 10, 2018 at 12:22

Gordon Freeman

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2 Comments

niksrb Over a year ago

Actually, you are right about array_keys method. I am newbie at this, so it was my mistake. About code you have written in this answer, I am getting next error Trying to get property of non-object. This is probably because elements of $properties are not objects, but arrays? Also, I do not need whole $properties into $filter, I just need $properties[$key]->id (I know this is probably not the right syntax, but I guess you can understand what I am talking about).

Gordon Freeman Over a year ago

Yepp, your guess should be right. there are no objects inside your properties array. See edit. PS. remember to accept the answer, if it solves your problem.

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