Laravel split() returns a mix of arrays and objects

Question

I am trying to split an array into two parts.

$collection = collect( [1, 2, 15, 16] );

$groups = $collection->split( 2 );

The results are... mixed:

(2) [Array(2), {…}]
    0: Array(2)
        0: 1
        1: 2
        length: 2
        __proto__: Array(0)
    1: 
        2: 15
        3: 16
        __proto__: Object
    length: 2
    __proto__: Array(0)

I am not sure if it is a bug or I am missing something. If I split into more groups, the first one is always an array and others are objects. Why does it do that and how can I make the output type consistent?

P.S. A quick solution is to use array_chunk( $collection, 2 ) if the collections happens to be an array with numeric indexes as in the case of this example. According to the answer below, if the indexes are not numeric, then this problem should not occur.

What does __proto__ property do there? I think this result is from the javascript console — YouneL
– YouneL, Commented Nov 8, 2017 at 13:29
@YouneL Hmm good point. It is from console. I guess perhaps by the time it arrives to the front end something happens to it. I need to look into that — Arthur Tarasov
– Arthur Tarasov, Commented Nov 8, 2017 at 13:33
Nothing happens to anything. json_encoding array with numeric keys starting not from 0 gives you an object. — u_mulder
– u_mulder, Commented Nov 8, 2017 at 13:34

u_mulder · Accepted Answer · 2017-11-08 13:37:14Z

2

This is an obvious example:

$a = [[1,2], [2 => 2, 3 => 3]];
echo json_encode($a);

Output is:

[[1,2],{"2":2,"3":3}]

First element will be array because keys in it are zero-indexed, second will be object, because keys in it are not zero-indexed.

answered Nov 8, 2017 at 13:37

u_mulder

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Vahid · Accepted Answer · 2017-11-08 13:18:07Z

1

Nope, you probably missing something. if you split a collection, the result will be collection of collections:

Illuminate\Support\Collection {#1178
#items: array:2 [
    0 => Illuminate\Support\Collection {#1177
      #items: array:2 [
        0 => 1
        1 => 2
      ]
    }
    1 => Illuminate\Support\Collection {#1156
      #items: array:2 [
        2 => 15
        3 => 16
      ]
    }
  ]
}

answered Nov 8, 2017 at 13:18

Vahid

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Raza Mehdi · Accepted Answer · 2017-11-08 13:20:05Z

-1

You also need to call $groups->toArray() method as well.

answered Nov 8, 2017 at 13:20

Raza Mehdi

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