настройка регулярного выражения

public/api.php

@@ -1,9 +1,15 @@
 <?php
-require_once '../config.php';
-$db = new PDO("sqlite:../db/dns.sqlite");
-
-$topDomains = $db->query("SELECT domain, COUNT(*) as hits FROM logs GROUP BY domain ORDER BY hits DESC LIMIT 10")->fetchAll(PDO::FETCH_ASSOC);
-echo json_encode($topDomains);
 ini_set('display_errors', 1);
-ini_set('display_startup_errors', 1);
-error_reporting(E_ALL);
+error_reporting(E_ALL);
+
+try {
+    $db = new PDO("sqlite:../db/dns.sqlite");
+    $stmt = $db->query("SELECT domain, COUNT(*) as hits FROM logs GROUP BY domain ORDER BY hits DESC LIMIT 10");
+    $data = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    header('Content-Type: application/json');
+    echo json_encode($data ?: []);
+} catch (Exception $e) {
+    http_response_code(500);
+    echo json_encode(["error" => $e->getMessage()]);
+}