Please, help me with this, I don't know what is going wrong!

I have the following tables in my database: permissoes, that contains the id and name of all permissions possible, like id//permission 1//create user 2//delete user 3//edit user and so on. I have another table called grupos with the group names and ids: id//group 1//superuser 2//editor 3//user and so on. And then I have a 3 table that relate this 2 tables, grupos_permissoes, containing id from the other groups. id_grupos//id_permissoes 1//1 1//2 1//3 and so on. Very well. Then I am trying to validate every permission. If the group has the permission, the function shoul return a value. If the group doesnt have the permission, it returns another value. Here is what I did: //this function lists all the permissions possible function lista_permissoes() { $result = mysql_query("select * from permissoes ORDER BY ordem"); while ($row = mysql_fetch_array($result,MYSQL_ASSOC)) { $permissoes[] = $row; } return $permissoes; }; //this one is supposed to check if the group has the permission function validar($grupo,$perm) { //here it selects all the permissions from a group $permissao = mysql_query("select id_permissoes from grupos_permissoes where id_grupos = $grupo"); $row = mysql_fetch_array($permissao,MYSQL_ASSOC); //then I am checking if the array contains the permission I am checking $acesso = 0; if (in_array($perm,$row)) { //then changing the value if it contains $acesso = 1; } return $acesso; } //And then finally printing it down ?> <html> <? $permis = lista_permissoes(); for($i=0; $i<=sizeof($permis); $i++) { $permiss = $permis[$i]; $aux = validar(3,$permiss['id']); if ($aux == 1) echo "Yes"; else echo "No"; } ?> And here is my problem: he does everything right for the first permission but for the rest it returns no... I dont know what is going wrong! Can you help me out? Thank you very much, Dani --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.481 / Virus Database: 277 - Release Date: 13/5/2003