'.$_SESSION['status'].'
';
unset($_SESSION['status']);
}
}
function checkParamId($paramType)
{
if(isset($_GET[$paramType]))
{
if($_GET[$paramType] != null)
{
return $_GET[$paramType];
}
else
{
return 'keine ID gefunden';
}
}
else
{
return 'keine ID angegeben';
}
}
function getAll($columnname,$tablename,$conditionvalue = "")
{
global $conn;
$column = validate($columnname);
$table = validate($tablename);
//$condition = validate($conditionvalue);
$query = "SELECT $column FROM $table $conditionvalue";
$result = mysqli_query($conn, $query);
return $result;
}
function getById($tableName, $id)
{
global $conn;
$table = validate($tableName);
$id = validate($id);
$query = "SELECT * FROM $table WHERE id='$id' LIMIT 1";
$result = mysqli_Query($conn, $query);
if($result)
{
if(mysqli_num_rows($result) == 1)
{
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
$response = [
'status' => 200,
'message' => 'Daten konnten abgerufen werden',
'data' => $row
];
return $response;
}
else
{
$response = [
'status' => 404,
'message' => 'Keinen Eintrag gefunden'
];
return $response;
}
}
else
{
$response = [
'status' => 500,
'message' => 'Ein Fehler ist aufgetreten'
];
return $response;
}
}
function getByCategoryId($tableName, $id)
{
global $conn;
$table = validate($tableName);
$id = validate($id);
$query = "SELECT * FROM $table WHERE id='$id' LIMIT 1";
$result = mysqli_Query($conn, $query);
if($result)
{
if(mysqli_num_rows($result) == 1)
{
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
$response = [
'status' => 200,
'message' => 'Daten konnten abgerufen werden',
'data' => $row
];
return $response;
}
else
{
$response = [
'status' => 404,
'message' => 'Keinen Eintrag gefunden'
];
return $response;
}
}
else
{
$response = [
'status' => 500,
'message' => 'Ein Fehler ist aufgetreten'
];
return $response;
}
}
function archiveQuery($tablename, $id)
{
global $conn;
$table = validate($tablename);
$id = validate($id);
$query = "UPDATE $table SET status='archived' WHERE id='$id' LIMIT 1";
$result = mysqli_query($conn, $query);
return $result;
}
function reactivateQuery($tablename, $id)
{
global $conn;
$table = validate($tablename);
$id = validate($id);
$query = "UPDATE $table SET status='active' WHERE id='$id' LIMIT 1";
$result = mysqli_query($conn, $query);
return $result;
}
function deleteQuery($tablename, $id, $limit = "")
{
global $conn;
$table = validate($tablename);
$id = validate($id);
$query = "DELETE FROM $table WHERE id='$id' '$limit'";
$result = mysqli_query($conn, $query);
return $result;
}
function getAllClasses($status)
{
global $conn;
if(!$status) {$querystatus = "";}
elseif($status){$querystatus = "WHERE status='$status'";}
$query = "SELECT id, CONCAT(sek, ' ', type, ' - ', name) AS display_name FROM tbl_classes $querystatus ORDER BY display_name ASC";
$result = mysqli_query($conn, $query);
$classOptions = array();
if ($result) {
while ($row = mysqli_fetch_assoc($result)) {
$classOptions[$row['id']] = $row['display_name'];
}
}
return $classOptions;
}
function getStudentCountsPerClass() {
global $conn;
$classOptions = getAllClasses('active');
$classCounts = array();
if (!empty($classOptions)) {
foreach ($classOptions as $classID => $className) {
$query = "SELECT COUNT(*) as count FROM tbl_students WHERE class = $classID AND (status='active' OR status='disabled')";
$result = mysqli_query($conn, $query);
if ($result) {
$row = mysqli_fetch_assoc($result);
$count = $row['count'];
} else {
$count = 0;
}
$classCounts[$classID] = $count;
}
}
return $classCounts;
}
function createEnumSelect($tableName, $columnName, $selectedValue = '', $valueLabels = [])
{
global $conn;
$query = "SHOW COLUMNS FROM $tableName LIKE '$columnName'";
$result = mysqli_query($conn, $query);
if ($result) {
$row = mysqli_fetch_assoc($result);
$enumStr = $row['Type'];
$enumValues = explode(",", str_replace("'", "", substr($enumStr, 5, -1)));
foreach ($enumValues as $enumValue) {
$enumLabel = isset($valueLabels[$enumValue]) ? $valueLabels[$enumValue] : ucfirst($enumValue);
$selected = ($enumValue == $selectedValue) ? 'selected' : '';
echo "";
}
} else {
echo "";
}
}
function createEnumSelectFiltered($tableName, $columnName, $selectedValue = '', $valueLabels = []) {
global $conn;
$query = "SHOW COLUMNS FROM $tableName LIKE '$columnName'";
$result = mysqli_query($conn, $query);
if ($result) {
$row = mysqli_fetch_assoc($result);
$enumStr = $row['Type'];
$enumValues = explode(",", str_replace("'", "", substr($enumStr, 5, -1)));
foreach ($enumValues as $enumValue) {
if (isset($valueLabels[$enumValue])) {
$enumLabel = $valueLabels[$enumValue];
$selected = ($enumValue == $selectedValue) ? 'selected' : '';
echo "";
}
}
} else {
echo "";
}
}
function getArchivedStudentsWithActiveClasses() {
global $conn;
$query = "SELECT
tbl_students.id AS student_id,
tbl_students.firstname AS student_firstname,
tbl_students.lastname AS student_lastname,
tbl_students.userid AS student_userid,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS display_name
FROM tbl_students
INNER JOIN tbl_classes ON tbl_students.class = tbl_classes.id
WHERE tbl_students.status = 'archived' AND tbl_classes.status != 'archived'";
$result = mysqli_query($conn, $query);
$students = array();
while ($row = mysqli_fetch_assoc($result)) {
$students[] = $row;
}
return $students;
}
function deleteArchivedStudentsWithActiveClasses($students) {
global $conn;
foreach ($students as $student) {
$student_id = $student['student_id'];
$query = "DELETE FROM tbl_students WHERE id='$student_id'";
$result = mysqli_query($conn, $query);
}
return $result;
}
function reactivateArchivedStudentsWithActiveClasses($students) {
global $conn;
foreach ($students as $student) {
$student_id = $student['student_id'];
$query = "UPDATE tbl_students SET status='active' WHERE id='$student_id'";
$result = mysqli_query($conn, $query);
}
return $result;
}
function getArchivedClasses() {
global $conn;
$query = "SELECT
tbl_classes.id AS class_id,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS display_name,
GROUP_CONCAT(
CONCAT(tbl_students.firstname, ' ', tbl_students.lastname, ' (ID: ', tbl_students.userid, ')')
SEPARATOR '
'
) AS students
FROM tbl_classes
LEFT JOIN tbl_students ON tbl_classes.id = tbl_students.class
WHERE tbl_classes.status = 'archived' AND tbl_students.status = 'archived'
GROUP BY tbl_classes.id";
$result = mysqli_query($conn, $query);
$classes = array();
while ($row = mysqli_fetch_assoc($result)) {
$classes[] = $row;
}
return $classes;
}
function getClassesGroupedByLevel($status)
{
global $conn;
if (!$status) {
$querystatus = "";
} elseif ($status) {
$querystatus = "WHERE status='$status'";
}
$query = "SELECT id, sek, CONCAT(sek, ' ', type, ' - ', name) AS display_name FROM tbl_classes $querystatus ORDER BY sek ASC, display_name ASC";
$result = mysqli_query($conn, $query);
$groupedClasses = array();
if ($result) {
while ($row = mysqli_fetch_assoc($result)) {
$level = $row['sek'];
// Erstelle ein neues Array für die Stufe, wenn es noch nicht existiert
if (!isset($groupedClasses[$level])) {
$groupedClasses[$level] = array();
}
// Füge die Klasse zur entsprechenden Stufe hinzu
$groupedClasses[$level][] = array(
'id' => $row['id'],
'display_name' => $row['display_name']
);
}
}
return $groupedClasses;
}
function getAssignedItems($tableName, $primaryId, $secondaryColumn, $primaryColumn)
{
global $conn;
$primaryId = validate($primaryId);
$query = "SELECT $secondaryColumn FROM $tableName WHERE $primaryColumn = '$primaryId'";
$result = mysqli_query($conn, $query);
$assignedItems = array();
while ($row = mysqli_fetch_assoc($result)) {
$assignedItems[] = $row[$secondaryColumn];
}
return $assignedItems;
}
function getStudentInformation($id)
{
global $conn;
$id = validate($id);
$query = "SELECT
tbl_students.id,
tbl_students.firstname,
tbl_students.lastname,
tbl_students.userid,
tbl_students.status,
tbl_students.dateofbirth,
tbl_students.gender,
tbl_students.class,
tbl_students.emailstudent,
tbl_students.emailparent1,
tbl_students.emailparent2,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS classDisplayName
FROM tbl_students
JOIN tbl_classes ON tbl_students.class = tbl_classes.id
WHERE tbl_students.id = '$id'";
$result = mysqli_query($conn, $query);
if($result)
{
if(mysqli_num_rows($result) == 1)
{
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
$response = [
'data' => $row
];
return $response;
}
}
}
function getCategories($id)
{
global $conn;
$id = validate($id);
$query = "SELECT
tbl_students.id,
tbl_categories.id AS category_id,
tbl_categories.name
FROM
tbl_students
JOIN
tbl_classes ON tbl_students.class = tbl_classes.id
JOIN
tbl_assign_categories_classes ON tbl_classes.id = tbl_assign_categories_classes.class_id
JOIN
tbl_categories ON tbl_assign_categories_classes.category_id = tbl_categories.id
WHERE
tbl_students.id = '$id'";
$result = mysqli_query($conn, $query);
if($result) {
$categories = array();
while ($row = mysqli_fetch_assoc($result)) {
$categories[] = $row;
}
return $categories;
}
}
function getForms($student_id)
{
global $conn;
$student_id = validate($student_id);
$query = "SELECT
tbl_forms.id AS form_id,
tbl_forms.name AS form_name,
tbl_forms.deadline AS deadline
FROM
tbl_forms
JOIN
tbl_assign_forms_classes ON tbl_forms.id = tbl_assign_forms_classes.form_id
JOIN
tbl_students ON tbl_assign_forms_classes.class_id = tbl_students.class
WHERE
tbl_students.id = '$student_id'";
$result = mysqli_query($conn, $query);
if($result) {
$forms = array();
while ($row = mysqli_fetch_assoc($result)) {
$forms[] = $row;
}
return $forms;
}
}
function getClassesPerCategory($category_id){
global $conn;
$category_id = validate($category_id);
$query = "
SELECT tbl_classes.id,
tbl_classes.sek,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS classDisplayName
FROM tbl_classes
LEFT JOIN tbl_assign_categories_classes ON tbl_classes.id = tbl_assign_categories_classes.class_id
WHERE tbl_classes.status = 'active'
AND (tbl_assign_categories_classes.category_id = '$category_id' OR tbl_assign_categories_classes.category_id IS NULL)
ORDER BY sek ASC, classDisplayName ASC
";
$result = mysqli_query($conn, $query); // Annahme: $conn ist Ihre MySQL-Verbindung
// Hier können Sie die verfügbaren Klassen für die Anzeige verwenden
if ($result) {
$classes = array();
while ($row = mysqli_fetch_assoc($result)) {
$classes[] = $row; // Hier können Sie die Klasse anzeigen oder in Ihrer Anwendung verwenden
}
return $classes;
}
}
function getClassesPerForm($form_id){
global $conn;
$form_id = validate($form_id);
$query = "
SELECT tbl_classes.id,
tbl_classes.sek,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS classDisplayName
FROM tbl_classes
INNER JOIN tbl_assign_forms_classes ON tbl_classes.id = tbl_assign_forms_classes.class_id
WHERE tbl_classes.status = 'active'
AND (tbl_assign_forms_classes.form_id = '$form_id')
ORDER BY sek ASC, classDisplayName ASC
";
$result = mysqli_query($conn, $query); // Annahme: $conn ist Ihre MySQL-Verbindung
// Hier können Sie die verfügbaren Klassen für die Anzeige verwenden
if ($result) {
$classes = array();
while ($row = mysqli_fetch_assoc($result)) {
$classes[] = $row; // Hier können Sie die Klasse anzeigen oder in Ihrer Anwendung verwenden
}
return $classes;
}
}
function getClassesPerFormContent($formcontent_id){
global $conn;
$formcontent_id = validate($formcontent_id);
$query = "
SELECT tbl_classes.id,
tbl_classes.sek,
CONCAT(tbl_classes.sek, ' ', tbl_classes.type, ' - ', tbl_classes.name) AS classDisplayName
FROM tbl_classes
INNER JOIN tbl_assign_formcontents_classes ON tbl_classes.id = tbl_assign_formcontents_classes.class_id
WHERE tbl_classes.status = 'active'
AND (tbl_assign_formcontents_classes.formcontent_id = '$formcontent_id')
ORDER BY sek ASC, classDisplayName ASC
";
$result = mysqli_query($conn, $query);
if ($result) {
$classes = array();
while ($row = mysqli_fetch_assoc($result)) {
$classes[] = $row;
}
return $classes;
}
}
function getTeachers()
{
global $conn;
// Führe die Abfrage aus
$query = "SELECT CONCAT(firstname, ' ', lastname) AS name, id FROM tbl_teachers ORDER BY name ASC";
$result = mysqli_query($conn, $query);
// Überprüfe, ob die Abfrage erfolgreich war
if (!$result) {
die("Fehler beim Ausführen der Abfrage: " . mysqli_error($conn));
}
// Fetch die Ergebnisse und speichere nur die benötigten Informationen
$data = array();
while ($row = mysqli_fetch_assoc($result)) {
$data[] = $row;
}
return $data;
}
function getCourseTeacher($id)
{
global $conn;
// Führe die Abfrage aus
$query = "SELECT CONCAT(firstname, ' ', lastname) AS name FROM tbl_teachers WHERE id='$id'";
$result = mysqli_query($conn, $query);
if ($result) {
// Holen Sie den Datensatz aus dem Ergebnis
$row = mysqli_fetch_assoc($result);
// Rückgabe des Namens des Kursleiters
return $row['name'];
} else {
// Rückgabe eines leeren Strings im Fehlerfall
return '';
}
}
function getCourseDatesByCourseID($courseID)
{
global $conn;
$courseID = validate($courseID);
$query = "SELECT * FROM tbl_coursedates WHERE course_id='$courseID'";
$result = mysqli_query($conn, $query);
$courseDates = array();
if ($result) {
while ($row = mysqli_fetch_assoc($result)) {
$courseDates[] = $row;
}
}
return $courseDates;
}
function getCoursesByClassAndCategory($classID, $categoryID)
{
global $conn;
$classID = validate($classID);
$categoryID = validate($categoryID);
$query = "SELECT
tbl_courses.id,
tbl_courses.name,
tbl_courses.slogan
FROM
tbl_courses
INNER JOIN
tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
INNER JOIN
tbl_categories ON tbl_courses.category_id = tbl_categories.id
INNER JOIN
tbl_classes ON tbl_assign_courses_classes.class_id = tbl_classes.id
WHERE
tbl_classes.id = '$classID' AND tbl_categories.id = '$categoryID'";
$result = mysqli_query($conn, $query);
if($result) {
$courses = array();
while ($row = mysqli_fetch_assoc($result)) {
$courses[] = $row;
}
return $courses;
}
}
function getDeadline($categoryID, $classID)
{
global $conn;
$categoryID = validate($categoryID);
$classID = validate($classID);
// Zuerst prüfen, ob die Deadline für die Kategorie festgelegt ist
$query = "SELECT registration, showuntil, showuntil_set, deadline_set, deadline FROM tbl_categories WHERE id='$categoryID'";
$result = mysqli_query($conn, $query);
if ($result) {
$row = mysqli_fetch_assoc($result);
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'yes')) {
return $row['deadline'];
}
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(tbl_courses.deadline) AS max_deadline
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_deadline'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'yes')) {
return $row['showuntil'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(tbl_courses.show_until) AS max_showuntil
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_showuntil'];
}
if (($row['registration'] == 'custom')) {
// Abfrage, um die neueste Deadline oder show_until aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(CASE
WHEN tbl_courses.registration = 'yes' THEN tbl_courses.deadline
WHEN tbl_courses.registration = 'no' THEN tbl_courses.show_until
ELSE NULL
END) AS max_deadline_or_showuntil
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_deadline_or_showuntil'];
}
}
return null; // Rückgabe von null, wenn keine Deadline gefunden wurde
}
function getCourseDeadline($courseID)
{
global $conn;
$courseID = validate($courseID);
// Abfrage, um die Kategorie-ID des Kurses zu finden
$query = "SELECT category_id FROM tbl_courses WHERE id='$courseID'";
$result = mysqli_query($conn, $query);
if ($result && mysqli_num_rows($result) > 0) {
$row = mysqli_fetch_assoc($result);
$categoryID = $row['category_id'];
// Abfrage, um den Namen der Kategorie anhand der Kategorie-ID zu finden
$query = "SELECT registration, showuntil, showuntil_set, deadline_set, deadline FROM tbl_categories WHERE id='$categoryID'";
$result = mysqli_query($conn, $query);
if ($result && mysqli_num_rows($result) > 0) {
$row = mysqli_fetch_assoc($result);
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'yes')) {
return $row['deadline'];
}
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT deadline FROM tbl_courses WHERE id='$courseID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['deadline'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'yes')) {
return $row['showuntil'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT show_until FROM tbl_courses WHERE id='$courseID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['show_until'];
}
if (($row['registration'] == 'custom')) {
// Abfrage, um die neueste Deadline oder show_until aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT (CASE
WHEN registration = 'yes' THEN deadline
WHEN registration = 'no' THEN show_until
ELSE NULL
END) AS deadline_or_showuntil
FROM tbl_courses
WHERE id='$courseID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['deadline_or_showuntil'];
}
}
}
return null;
// Zuerst prüfen, ob die Deadline für die Kategorie festgelegt ist
$query = "SELECT registration, showuntil, showuntil_set, deadline_set, deadline FROM tbl_categories WHERE id='$categoryID'";
$result = mysqli_query($conn, $query);
if ($result) {
$row = mysqli_fetch_assoc($result);
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'yes')) {
return $row['deadline'];
}
if (($row['registration'] == 'yes') && ($row['deadline_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(tbl_courses.deadline) AS max_deadline
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_deadline'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'yes')) {
return $row['showuntil'];
}
if (($row['registration'] == 'no') && ($row['showuntil_set'] == 'custom')) {
// Abfrage, um die neueste Deadline aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(tbl_courses.show_until) AS max_showuntil
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_showuntil'];
}
if (($row['registration'] == 'custom')) {
// Abfrage, um die neueste Deadline oder show_until aller Kurse der Kategorie und Klasse zu finden
$courseQuery = "SELECT MAX(CASE
WHEN tbl_courses.registration = 'yes' THEN tbl_courses.deadline
WHEN tbl_courses.registration = 'no' THEN tbl_courses.show_until
ELSE NULL
END) AS max_deadline_or_showuntil
FROM tbl_courses
INNER JOIN tbl_assign_courses_classes ON tbl_courses.id = tbl_assign_courses_classes.course_id
WHERE tbl_courses.category_id='$categoryID' AND tbl_assign_courses_classes.class_id='$classID'";
$courseResult = mysqli_query($conn, $courseQuery);
$courseRow = mysqli_fetch_assoc($courseResult);
return $courseRow['max_deadline_or_showuntil'];
}
}
return null; // Rückgabe von null, wenn keine Deadline gefunden wurde
}
function getActiveStudentsByCategory($categoryID) {
global $conn;
$categoryID = validate($categoryID);
// Abfrage, um alle aktiven Schüler abzurufen, die einer bestimmten Kategorie zugewiesen sind
$query = "SELECT DISTINCT tbl_students.id, tbl_students.class, tbl_students.firstname, tbl_students.lastname, CONCAT(tbl_students.firstname, ' ', tbl_students.lastname) AS name
FROM tbl_students
INNER JOIN tbl_assign_categories_classes ON tbl_students.class = tbl_assign_categories_classes.class_id
WHERE tbl_assign_categories_classes.category_id = '$categoryID'
AND tbl_students.status != 'archived'";
$result = mysqli_query($conn, $query);
$students = [];
if ($result && mysqli_num_rows($result) > 0) {
while ($row = mysqli_fetch_assoc($result)) {
$students[] = $row;
}
}
return $students;
}
function getStudentCourseData($studentID, $courseID) {
global $conn;
$studentID = validate($studentID);
$courseID = validate($courseID);
// Abfrage, um die Daten des Schülers für den angegebenen Kurs abzurufen
$query = "SELECT * FROM tbl_assign_students_courses
WHERE student_id='$studentID' AND course_id='$courseID'";
$result = mysqli_query($conn, $query);
if ($result && mysqli_num_rows($result) > 0) {
$row = mysqli_fetch_assoc($result);
return $row;
}
}
function getCoursesByCategory($categoryID) {
global $conn;
$categoryID = validate($categoryID);
// Abfrage, um alle Kurse abzurufen, die einer bestimmten Kategorie zugeordnet sind
$query = "SELECT * FROM tbl_courses WHERE category_id = '$categoryID'";
$result = mysqli_query($conn, $query);
$courses = [];
if ($result && mysqli_num_rows($result) > 0) {
while ($row = mysqli_fetch_assoc($result)) {
$courses[] = $row;
}
}
return $courses;
}
function getStudentAssignments($studentID)
{
global $conn;
$studentID = validate($studentID);
$query = "SELECT * FROM tbl_assign_students_courses WHERE student_id = $studentID";
$result = mysqli_query($conn, $query);
if ($result) {
$assignments = array();
while ($row = mysqli_fetch_assoc($result)) {
$assignments[] = $row;
}
return $assignments;
} else {
return false;
}
}
function isStudentRegisteredForCourse($studentId, $courseId) {
// Hier eine Abfrage zur Datenbank machen, um zu prüfen, ob ein Eintrag in tbl_assign_students_courses existiert
global $conn; // Annahme, dass $conn die Datenbankverbindung ist
$query = "SELECT COUNT(*) FROM tbl_assign_students_courses WHERE student_id = ? AND course_id = ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('ii', $studentId, $courseId);
$stmt->execute();
$stmt->bind_result($count);
$stmt->fetch();
$stmt->close();
return $count > 0;
}
// Function to get all courses assigned to a student
function getAllAssignedCourses($studentID) {
global $conn;
$assignedCourses = array();
$query = "SELECT course_id FROM tbl_assign_students_courses WHERE student_id = '$studentID'";
$result = mysqli_query($conn, $query);
if ($result) {
while ($row = mysqli_fetch_assoc($result)) {
$assignedCourses[] = $row['course_id'];
}
}
return $assignedCourses;
}
function getAllAssignedCoursesByCategory($studentID, $categoryID) {
global $conn;
$assignedCourses = array();
$query = "SELECT tac.course_id FROM tbl_assign_students_courses tac
JOIN tbl_courses tc ON tac.course_id = tc.id
WHERE tac.student_id = '$studentID' AND tc.category_id = '$categoryID'";
$result = mysqli_query($conn, $query);
if ($result) {
while ($row = mysqli_fetch_assoc($result)) {
$assignedCourses[] = $row['course_id'];
}
}
return $assignedCourses;
}
?>