It seems the seed was a bit to big (they all had the same result ).. So I had to change the code a bit to the last 6 bits of the hash.. Sorry for that... I won't change the first winner, but the rest is drawn with new seed:
Code:
$key=0x76e305; // last 6 bits of blockhash mt_srand($key); echo mt_rand(1,616); echo "\n";