Online PHP editor | refs for ehD26

@ 2019-09-10T05:52:29Z

<?php
$a = [20,22,29,40,67,35,98,200,205,220];
subTractReccursive($a);
function subTractReccursive($a){
	for($i=0;$i<count($a)-1;$i++){
		$c[] = $a[$i+1]-$a[$i];
	}
	echo implode ('  ',$c)."\n";
	if(count($c) > 1){
		subTractReccursive($c);
	}
	return;
}