<?php include_once "../../../vendor/autoload.php"; //using relative path //include_once($_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.'AtomicProject'.DIRECTORY_SEPARATOR.'vendor'.DIRECTORY_SEPARATOR.'autoload.php'); //using absolute path use App\Bitm\SEIP118719\Summary_Organizations\Summary_Organizations; $summary_orga_obj = new Summary_Organizations($_POST); $summary_orga_obj->store();