Laravel get contents of Excel to insert in Database

I'm having a problem while uploading excel file and update data to my database using Laravel 5.6 and Laravel Excel(maatwebsite 3.1) i can't get the contents of each column to update the data in my database.

$rows return empty

Model:
namespace App;
use App\User;

use App\MyModel;

use Illuminate\Support\Collection;

use Maatwebsite\Excel\Concerns\ToCollection;
class DataImport implements ToCollection

{

/**

* @param array $rows

*

* @return \Illuminate\Database\Eloquent\Model|null

*/

public function collection(Collection $rows)

{

dd($rows);

foreach ($rows as $row) {

$import = MyModel::where(‘user_id’,$row[1])->first();

$import->field1= $row[2];

$import->field2= $row[5];

$import->field3= $row[3];

$import->status = ‘PAID’;

$import->save();

}
}

}
Controller:
use Maatwebsite\Excel\Excel;

public function postImport(Request $request){
    if($request->hasFile('sample_file')){
        Excel::import(new DataImport ,request()->file('sample_file'));

        return redirect('/import');
    }

}

Excel File:

--------------------------------------------------------------------------------

| #  | USER ID | FIELD ONE | FIELD TWO | FIELD THREE | FIELD FOUR | FIELD FIVE |
| 1  |    1    |   123-abc |  abc-123  |    123123   |    asdf    |   konjesh  |

#php #excel #laravel