adds

test/db-test.php

@@ -0,0 +1,19 @@
+<?php
+$servername = "";
+$username = "";
+$password = "";
+$database = "";
+
+$var_mysqli = function_exists('mysqli_connect');
+var_dump($var_mysqli);
+
+// Create connection
+$conn = mysqli_connect($servername, $username, $password, $database);
+
+// Check connection
+if (!$conn) {
+  die("Connection failed: " . mysqli_connect_error());
+}
+echo "Connected successfully";
+
+?>