roxane/routes/dev-routes.php

<?php

use Illuminate\Support\Facades\Route;

Route::get('/call-dolibarr', function () {
    $call = new App\Services\DolibarrService;
    $members = $call->getAllMembers();
    // find specific
    $userData = collect($members)->firstWhere('id', 124); // Isabelle AK

    //dd($userData);
    $subscriptions = collect($call->getMemberSubscriptions(124))->firstWhere('id', 324);
    dd($subscriptions);
    $date1 = \Carbon\Carbon::createFromTimestamp($subscriptions['datec'])->format('d/m/Y');
    $date2 = \Carbon\Carbon::createFromTimestamp($subscriptions['datem'])->format('d/m/Y');
    $date3 = \Carbon\Carbon::createFromTimestamp($subscriptions['dateh'])->format('d/m/Y');
    $date4 = \Carbon\Carbon::createFromTimestamp($subscriptions['datef'])->format('d/m/Y');

    dd($date1, $date2, $date3, $date4);

})->name('call-dolibarr');