PHP Generating random alphabetic string

Generating random alphabetic string

<?
$a = chr(rand(ord('a'),ord('z'))) . chr(rand(ord('a'),ord('z')));
$b = rand(1,99);
$c = chr(rand(ord('a'),ord('z'))) . chr(rand(ord('a'),ord('z')));
$d = rand(1,99);
$e = chr(rand(ord('a'),ord('z'))) . chr(rand(ord('a'),ord('z')));
$f = rand(1,99);
$g = chr(rand(ord('a'),ord('z'))) . chr(rand(ord('a'),ord('z')));
$h = rand(1,99);
$name = "$a$b$c$d$e$f$g$h";
echo $name;
?>