Kaasschaaf

kaasschaaf.php

<?php
/*
 * Count from 1 to 100,
 * for every multiple of 3, echo "Kaas"
 * for every multiple of 5, echo "Schaaf"
 */
function kaasschaaf()
{
	$output = '';
	for($c = 1; $c <= 100; $c++)
	{
		$output .= $c.' ';
		
		if(is_int($c / 3))
			$output .= 'Kaas';
		
		if(is_int($c / 5))
			$output .= 'Schaaf';
		
		$output .= "\n";
	}
	return $output;
}

echo '<pre>'.kaasschaaf().'</pre>';

Kaas

...Schaaf?