First version, for githup; UNSTABLE, DO NOT USE!

www/intern/scripts/trainer/ajax_unlink_delete_bodenmusik.php

@@ -0,0 +1,59 @@
+<?php
+
+if (session_status() !== PHP_SESSION_ACTIVE) session_start();
+
+$isTrainer =
+    isset($_SESSION['access_granted_trainer'], $_SESSION['passcodetrainer_id']) &&
+    $_SESSION['access_granted_trainer'] === true &&
+    (int)$_SESSION['passcodetrainer_id'] > 0;
+
+if (!$isTrainer) {
+    echo json_encode(['success' => false]);
+    http_response_code(403);
+    exit;
+}
+
+if (!isset($_POST['oldMusicId'])) {
+    echo json_encode(['success' => false]);
+    http_response_code(422);
+    exit;
+}
+
+$oldMusicId = intval($_POST['oldMusicId']);
+
+if ($oldMusicId < 1) {
+    echo json_encode(['success' => true]);
+    http_response_code(202);
+    exit;
+}
+
+if (!isset($baseDir)) $baseDir = $_SERVER['DOCUMENT_ROOT'];
+
+$type = 'tr';
+
+$data = include $baseDir . '/../scripts/db/db-verbindung-script.php';
+
+if ($data['success'] === false){
+	echo json_encode(['success' => false, 'message' => $data['message']]);
+    http_response_code(500);
+    exit; 
+}
+
+require $baseDir . '/../scripts/db/db-tables.php';
+
+$sql = "DELETE $tableAudiofiles WHERE id = ?";
+
+$stmt = $mysqli->prepare($sql);
+$stmt->bind_param("i", $oldMusicId);
+
+if (!$stmt->execute()) {
+    http_response_code(500);
+    exit;
+}
+
+$stmt->close();
+$mysqli->close();
+
+echo json_encode(['success' => true]);
+http_response_code(200);
+exit;