I think I have found a bug in the function 'sort'. It does not sort correct with norwegian letters. The norwegian alphabeth is made of 29 letters. The three last ones are spesial for norway (and sweden and denmark). 

Heres a sample of our alphabeth:
abcdefghijklmnopqrstuvwxyz???

And here are some code...

<?

// List of norwegian names, with norwegian letters
$to_be_sorted = array(mamma, ?yvind, sondre, v?rner, ?rlend, odd, hedvig, ?smund, birgit);

sort($to_be_sorted);

for ($i = 0; $i < sizeof($to_be_sorted); $i ++) {
  echo $to_be_sorted[$i]."<br>\n";
}

?>

This prodused this putput:

birgit 
hedvig 
mamma  
odd 
sondre 
v?rner 
?smund 
?rlend 
?yvind 

But it should have been:

birgit
hedvig
mamma 
odd 
sondre 
v?rner 
?rlend 
?yvind 
?smund 

Yours H?kon Flat?y

PS: PHP is GREAT!