<?$arr = array(
0 => "<p>Fill with your html for the first banner</p>",
1 => "<p>Fill with your html for the 2nd banner</p>",
2 => "<p>Fill with your html for the 3rd banner</p>"
);
// Don´t touch
// Print insertet banner-HTML
shuffle($arr);
foreach($arr as $banner => $value)
{
print $value;
}
// Thats it!