how to post the data of the client entered during registration into WHMCS using laravel

I have entered the controller and route code below and suggest me a solution to post the datas into WHMCS.

<?php

namespace App\Http\Controllers;

use App\Http\Controllers\ProductController;


use Illuminate\Http\Request;

use DarthSoup\Whmcs\Facades\Whmcs;
use Darthsoup\Whmcs\WhmcsServiceProvider;

use WHMCS\Database\Capsule;

class ProductController extends Controller
{
public function insertform(){
    return view('clientlayout.main.signup');
    } 


 public function insert(Request  $request)
 {
  $request=array();
    $request["firstname"] = $_POST['firstname'];
    $request["lastname"]=  $_POST['lastname'];
    $request["companyname"] =  $_POST['companyname'];
    $request["email"] =  $_POST['email'];
    $request["address1"] =  $_POST['address1'];
    $request["address2"] =  $_POST['address2'];
    $request["city"] =  $_POST['city'];
    $request["state"] =  $_POST['state'];
    $request["postcode"] =  $_POST['postcode'];
    $request["country "]=  $_POST['country'];
    $request["phonenumber "]=  $_POST['phonenumber'];
    $request["password"] =  $_POST['password'];

        $whmcs = Whmcs::create($request); 
        return redirect()->route('whmcs.detail', ["firstname" => $whmcs- 
        >firstname]);      

        print_r($request);

           echo '<a href = "/insert">Click Here</a> to go back.';

     }
     }

The logic in blade file is given below:

 <form class="container" action="" id="needs- 
  validation" method="post" novalidate>
    <input type = "hidden" name = "_token" value = "<?php echo csrf_token(); 
  ?>">

My route code is given below:

Route::get('insert', 'ProductController@insertform');
Route::post('insert', 'ProductController@insert')->name('product.insert');

Give me an idea in storing the data entered by the client during registration into WHMCS, as I'm having an issue in Storing it in WHMCS.

via Chebli Mohamed