restore composer.json, add mysqli extension

app/Http/Controllers/Dashboard/Billing/Controller.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Controllers\Dashboard\Billing;
+
+use App\Http\Controllers\Controller as ExController;
+use App\Models\Billing;
+use App\Models\Currency;
+use Illuminate\Http\Request;
+
+class Controller extends ExController
+{
+    public function index()
+    {
+        $this->authorize('view', 'billings');
+        $billings = Billing::latest('id')
+            ->paginate(config(50));
+        $currency = Currency::latest()->first();
+
+        return view('dashboard.billing.index', compact('billings', 'currency'));
+    }
+
+    /**
+     * @param Request $request
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
+     */
+    public function search(Request $request)
+    {
+        $id = $request->get('query');
+        $billings = Billing::where('id', $id)->orWhere('transaction_id', $id)->paginate(50);
+
+        return view('dashboard.billing.index', compact('billings'));
+
+    }
+}