how to display selected all values in drop down in laravel 5.1

Hi friend's help how to display selected all values for edit page in laravel this is my code

 <?php $explode_values =  explode(",",@$checkpointvalues[$checkpoint['id']]['description']); ?>

                                {!! Form::select($checkpoint['id'].'_c[]', isset($error_messages[$checkpoint['id']])?$error_messages[$checkpoint['id']] : array(), $explode_values, array('multiple'=>'true', 'class'=>'form-control js-example-tags select2','id'=>$checkpoint['id'].'_c')) !!}

all values stored to database but only display particular values only so help me

via Chebli Mohamed