How to put value on laravel collection?

Question

How to put value on first element in laravel collection ? Something like that $collection->put('foo', 1) but adding value to the first element.

Collection {#376
  #items: array:1 [
    0 => array:9 [
      "id" => 83
      "status" => "offline"
      "created_date" => "Oct 31, 2018"
      // add foo => 1 here
    ]
  ]
}

Answer 1

I suspect there's a cleaner way to do this, but this is the best I could come up with at the moment. You could also use map or transform with a comparison run on the key value that gets sent to their closures, but that would end up cycling through all elements of the array despite you knowing the specific one you want to target.

$collection = collect([
    [
        'id' => 83,
        'status' => 'offline',
        'created_date' => 'Oct 31, 2018'
    ]
]);

$firstKey = $collection->keys()->first();  //This avoids the unreliable assumption that your index is necessarily numeric.
$firstElement = $collection->first();
$modifiedElement = array_merge($firstElement, ['foo1' => 1]);
$collection->put($firstKey, $modifiedElement);