<?php
$random_text = array('<iframe src='1' scrolling='no' frameborder='0' width='200' height='112'></iframe>',
                    '<iframe src='2' scrolling='no' frameborder='0' width='200' height='112'></iframe>', 
<iframe src='3' scrolling='no' frameborder='0' width='200' height='112'></iframe>');
srand(time());
$sizeof = count($random_text);
$random = (rand()%$sizeof);
print("$random_text[$random]");
?>