asynchronous - php is synchronized or asynchronized? -

<?php     $list_years = getyears();     require_once 'view.php';  ?> 

here, getyears() in file. it's having fetching query. i'm using $list_years in view.php

here, synchronized or asynchronized?

this piece of code procedural, getyears() executed before require_once 'view.php';