Как в функции чтобы возвращал foreach всю выборку?

function shift($shop_id, $day){
    $monday = Shifts::find()->andWhere(['shop_id' => $shop_id])->andWhere(['>=', 'start_date', date('Y-m-d 00:00:00', strtotime($day))])->andWhere(['<=', 'start_date', date('Y-m-d 23:59:59', strtotime($day))])->all();
    foreach ($monday as $employee){
        return Yii::$app->formatter->asTime($employee->start_date, 'php:H:i').'-'.Yii::$app->formatter->asTime($employee->end_date, 'php:H:i').' '.$employee->user->nameEmployee.'<br>';
    }
}

echo Yii::$app->formatter->asTime($employee->start_date, 'php:H:i').'-'.Yii::$app->formatter->asTime($employee->end_date, 'php:H:i').' '.$employee->user->nameEmployee.'<br>';

<?php function day($shop_id, $day){
    return Shifts::find()->andWhere(['shop_id' => $shop_id, 'date' => date('Y-m-d 00:00:00', strtotime($day))])->all();
}
function cell($start, $end, $employee){
    echo Yii::$app->formatter->asTime($start, 'php:H:i').'-'.Yii::$app->formatter->asTime($end, 'php:H:i').' '.Html::a($employee->user->lastNameEmployee, ['shifts/update', 'id' => $employee->id], ['class' => 'button-editShifts', 'data-pjax' => 0]).'<br>';
}


<table class="table">
        <tr>
            <th>Магазины</th>
            <th>Пн <?= date("d.m", strtotime("last Monday")) ?></th>
            <th>Вт <?= date("d.m", strtotime("last Tuesday")); ?></th>
            <th>Ср <?= date("d.m", strtotime("last Wednesday")); ?></th>
            <th>Чт <?= date("d.m", strtotime("Thursday")); ?></th>
            <th>Пт <?= date("d.m", strtotime("Friday")); ?></th>
            <th>Сб <?= date("d.m", strtotime("Saturday")); ?></th>
            <th>Вс <?= date("d.m", strtotime("Sunday")); ?></th>
        </tr>
        <?php foreach ($shops as $shop){
            echo '<tr>
                <td>'.$shop->name.'</td>';
            echo '<td>';
            foreach (day($shop->id, 'last Monday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'last Tuesday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'last Wednesday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'Thursday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'Friday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'Saturday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
                <td>';
            foreach (day($shop->id, 'Sunday') as $employee){
                cell($employee->start_time, $employee->end_time, $employee);
            }
            echo '</td>
            </tr>';
        } ?>
    </table>

function day($shop_id, $day){ 
    return Shifts::find()->andWhere(['shop_id' => $shop_id, 'date' => date('Y-m-d 00:00:00', strtotime($day))])->all();
}

// Эту функцию можно перенести в модель как метод Shops::getShiftsByDay($day)
//{
//	return Shifts::find()->andWhere(['shop_id' => $this->id, 'date' => date('Y-m-d 00:00:00', strtotime($day))])->all();
//};

function cell($start, $end, $employee){
    echo Yii::$app->formatter->asTime($start, 'php:H:i').'-'.Yii::$app->formatter->asTime($end, 'php:H:i').' '.Html::a($employee->user->lastNameEmployee, ['shifts/update', 'id' => $employee->id], ['class' => 'button-editShifts', 'data-pjax' => 0]).'<br>';
}

// Эту функцию тоже можно перенести в модель Shifts::getFormattedTime()
//{
//	return sprintf('%s - %s %s', Yii::$app->formatter->asTime($this->start_time, 'php:H:i'), Yii::$app->formatter->asTime($this->end_time, 'php:H:i'), Html::a($this->user->lastNameEmployee, ['shifts/update', 'id' => $this->id], ['class' => 'button-editShifts', 'data-pjax' => 0]));
//}

$weekDays = [
'Пн' => "last Monday",
'Вт' => 'last Tuesday',
// и тд
];

<table class="table">
        <tr>
            <th>Магазины</th>
	    <?php foreach($weekDays as $shortname => $time): ?>
	            <th><?= $shortname ?> <?= date("d.m", strtotime($time)) ?></th>
            <?php endforeach; ?>
        </tr>
        <?php foreach ($shops as $shop): ?>
		<tr>
			<td><?= $shop->name ?></td>
		    <?php foreach($weekDays as $time): ?>
		            <td>
					<?php 
					$employeeData = array_map(function(Shifts $employee){ return $employee->getFormattedTime(); }, $shop->getShiftsByDay($time));
					echo implode('<br>', $employeeData);
					?>
			    </td>
	            <?php endforeach; ?>
		</tr>
        <?php endforeach; ?>
        } ?>
    </table>