asd

tools/db.php

@@ -2,6 +2,15 @@
 function tools_build_pdo(): PDO
 {
     $cfg = require __DIR__ . '/../src/config.php';
+    if (!is_array($cfg)) {
+        throw new RuntimeException('DB config did not return an array.');
+    }
+    $required = ['db_host', 'db_name', 'db_user', 'db_pass', 'db_charset'];
+    foreach ($required as $key) {
+        if (!array_key_exists($key, $cfg)) {
+            throw new RuntimeException('Missing DB config key: ' . $key);
+        }
+    }
     $dsn = "mysql:host={$cfg['db_host']};dbname={$cfg['db_name']};charset={$cfg['db_charset']}";
     $options = [
         PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,