Online PHP editor | refs for 9muEP

@ 2015-11-19T10:20:35Z

<?php

$count = 0;

function p($x, &$count) {
    $count++;
    if ($x<= 2) {
        return 2;
    } else {
        return p($x-1)+p($x-2) -1;
    }
}

$b = p(5, $count);
var_dump(p($b, $count));
echo $count;