Untitled

<?php
function add($a, $b)
{
	//this is our debug output
    echo $a . "+" . $b . "\n";
    return $a + $b;
}

function assertSame($one, $two) {
   if ($one !== $two) {
       die('not same');
   }
}


$expected1 = 4;
$expected2 = 23;
$expected3 = 42;


$calculated1 = add(1, 3);
$calculated2 = add(22, 2);
$calculated3 = add(40, 2);


assertSame($expected1, $calculated1);
assertSame($expected2, $calculated2);
assertSame($expected3, $calculated3);
?>