<?php
/******************************************************************************
Online PHP Interpreter.
Code, Compile, Run and Debug php program online.
Write your code in this editor and press "Run" button to execute it.
*******************************************************************************/
$orders=[0,1,2];
foreach ($orders as $order) {
$order++;
}
var_dump($orders);
foreach ($orders as &$order) {
$order++;
}
var_dump($orders);