function getLessonDetails($idCli, $idMob)
{
$lesson = new lesson();
$list_lesson_details = $lesson->list_lesson_details($idCli, $idMob);
foreach ($list_lesson_details as $item) {
$html .= '<label class="control-label" style="text-align:center;">';
$html .= '• ' . $item['interval'];
$html .= '</label>';
}
echo $html;
}