function getTableWithAllDepartments($universityName)
{
$departments = getDepartmentsNames($universityName);
$output = "<table><tr><th>Department Name</th></tr>";
if (isset($departments) && $departments != null) {
foreach ($departments as $i => $departmentName) {
$output .= "<tr><td>{$departmentName}</td></tr>";
}
}
$output .= "</table>";
return $output;
}
<?php
include 'functions.php';
if (!empty($_POST)) {
foreach ($_POST as $key => $value) {
switch ($key) {
case 'universityName':
if (!empty($_POST[$key])) {
$universityName = $_POST[$key];
$dep = getDepartmentsNames($universityName);
echo generateOptions($dep);
}
break;
case 'universityNameAndReturnDepartmentId':
if (!empty($_POST[$key])) {
$universityName = $_POST[$key];
$dep = getDepartments($universityName);
echo generateOptionsWithSpecifiedValueField($dep, 'departmentId', 'departmentName');
}
break;
case 'departmentIdAndReturnProfessorId':
if (!empty($_POST[$key])) {
$departmentId = $_POST[$key];
$pro = getProfessors($departmentId);
echo generateOptionsWithSpecifiedValueField($pro, 'professorId', 'professorUsername');
}
break;
case 'departmentIdAndReturnSecretaryId':
if (!empty($_POST[$key])) {
$departmentId = $_POST[$key];
$sec = getSecretaries($departmentId);