<?php
$num = 12;
echo "Fibonacci series using recursive function:";
echo "\n";

function series($num) {
    if ($num == 0)
        return 0;
    else if ($num == 1)
        return 1;
    else
        return (series($num-1) + series($num-2));
}

for ($i = 0; $i < $num; $i++) {
    echo series($i);
    echo "\n";
}