fibonacciNonRec.php

<?php
/**
 * @param {Integer} $n number of fibonacci sequence items
 * @return {String} fibonacci numbers calculated using iterative
 */
function fibonacciNonRec($n){
	if($n == 1) return '1';
	if($n == 2) return '1, 1';
	else {
		$ret = '1, 1';
		$first = $second = 1;
		$count = 3;
		while($count <= $n) {
			$result = $first + $second;
			$first = $second;
			$second = $result;
			$ret .= ', '.$result;
			$count++;
		}
		return $ret;
	}
}

echo 'Non recursive fibonacci '.fibonacciNonRec(10)."\n";
?>