Testing the firstof() function.

>>>>templates/test.tpl
<?xml version="1.0" ?>
<opt:root>
{firstof($foo, $bar, $joe)}
{firstof($foo, $bar, $joe, $goo)}
{firstof(null, $goo)}
</opt:root>

>>>>data.php
$view->joe = 'joe';
$view->goo = 'goo';

>>>>expected.txt
OUTPUT

>>>>result.txt
joe
joe
goo