cannot seem to understand why the bottom random isn't working, it was working before - Any ideas?

```
<?php 
$num = Rand (1,2,3);
// Based on random Case Number Echos that code
switch ($num) {
case 1:
echo 'CONTENT1';
break;
case 2:
echo 'CONTENT2';
break;
case 3:
echo 'CONTENT3';
break;
}
?>

```