//for get() array methods
if($data_array->isEmpty())
{dd('EMPTY');}
else
{dd('NOT EMPTY');}
//for other array
if (count($data_array) > 0)
{dd('EMPTY');}
else
{dd('NOT EMPTY');}is_array(mixed $value): bool $request->validate([
'data.*.recommend_question_id'=>'required',
'data.*.recommend'=>'required',
'data.*.date'=>'required'
]);// true
$isAssoc = Arr::isAssoc([
'associative' => 'array'
]);
// false
$isAssoc = Arr::isAssoc([
0 => 'A',
1 => 'B',
2 => 'C'
]);