What will be the output of the following PHP code?

What will be the output of the following PHP code?

<?php
function addFive($num)
{
    $num += 5;
}
function addSix(&$num)
{
    $num += 6;
}
$orignum = 10;
addFive( &$orignum );
echo "Original Value is $orignum<br />";
addSix( $orignum );
echo "Original Value is $orignum<br />";
?>