fixed matrici

public/userarea/save_matrice_lines.php

@@ -0,0 +1,43 @@
+<?php
+include('include/headscript.php');
+
+header('Content-Type: application/json; charset=utf-8');
+
+try {
+    $idmatrice = (int)($_POST['idmatrice'] ?? 0);
+    $raw = $_POST['idlinee'] ?? '[]';
+    $idlinee = json_decode($raw, true);
+
+    if ($idmatrice <= 0) {
+        echo json_encode(['success' => false, 'message' => 'Invalid idmatrice']);
+        exit;
+    }
+    if (!is_array($idlinee)) $idlinee = [];
+
+    // normalizza a int e rimuovi duplicati
+    $idlinee = array_values(array_unique(array_filter(array_map('intval', $idlinee), fn($v) => $v > 0)));
+
+    $db = DBHandlerSelect::getInstance();
+    $pdo = $db->getConnection();
+
+    $pdo->beginTransaction();
+
+    // rimuovi vecchie associazioni
+    $stmt = $pdo->prepare("DELETE FROM matrici_lines WHERE idmatrice = ?");
+    $stmt->execute([$idmatrice]);
+
+    // inserisci nuove
+    if (!empty($idlinee)) {
+        $stmt = $pdo->prepare("INSERT INTO matrici_lines (idmatrice, idlinea) VALUES (?, ?)");
+        foreach ($idlinee as $idlinea) {
+            $stmt->execute([$idmatrice, $idlinea]);
+        }
+    }
+
+    $pdo->commit();
+
+    echo json_encode(['success' => true, 'message' => 'Associazioni aggiornate']);
+} catch (Throwable $e) {
+    if (isset($pdo) && $pdo->inTransaction()) $pdo->rollBack();
+    echo json_encode(['success' => false, 'message' => 'Server error']);
+}