<slide title="Quiz 2">

<break lines="1" />

<example fontsize="3em" rfontsize="4em" result='1' title=""><![CDATA[<?php
function swap(&$a, &$b) {
    list($a, $b) = [$b, $a];
}
$x = 1; $y = 2;
swap($x, $y);
echo $x;]]></example>

</slide>
