<?php
$arr = [1,2,0,3];
$len = count($arr);
do {
echo current($arr).PHP_EOL;
next($arr);
$len --;
}while($len);
<?php
$arr = [1,2,0,3];
$len = count($arr);
do {
echo current($arr).PHP_EOL;
next($arr);
$len --;
}while($len);