returns false?

Hi
my login is not working after a coded the hasbalance function and made some changes.
Could you please check if one of the 3 functions is always returning false?
thanks
php:

<?
function hasbalance($username){
  $sql="SELECT lastpaid, newbalance FROM jf_users WHERE username='$username' ";
   $resultp=mysql_query($sql);
   $rp=mysql_fetch_array($resultp);
   $lastp=$rp['lastpaid'];
   $newb=$rp['newbalance'];
   $now=date("Y-m-d H:i:s");
   $lastp=strtotime($lastp);
   $now=strtotime($now);
   $seconds=$now-$lastp;
   $months=$seconds/60/60/24/30;
   $ii=1;
   $feesql="SELECT * FROM payment WHERE id='$ii' ";
   $rfee=mysql_query($feesql) or die(mysql_error()) ;
   $rrow=mysql_fetch_array($rfee);
   $mfee=$rrow['mfee'];
   $s_have=$mfee*$months;
   if ($s_have < $newb) { return true; }
   else{
   echo "Sorry, you don't have enough balance to access the site features.";
   }
}?>

PHP:

php:

<?
function isloggedin(){
        $u=mysql_real_escape_string($_COOKIE['jfuser']);
        $p=mysql_real_escape_string($_COOKIE['jfp']);
       
        $l=mysql_fetch_array(mysql_query("select username,password from jf_users where lcase(username)='".strtolower($u)."' and banned='0'"));
        if(strtolower($l['username'])==strtolower($u) and md5($l['password'])==$p){
        if (hasbalance($u))     {
    return true;
           }
           else echo "Sorry, you don't have enough balance to access the site features.";
  }else{
                return false;
        }
}?>

PHP:

php:

<?
function isvaliduser($u,$p){

        $l=mysql_fetch_array(mysql_query("select username,password from jf_users where lcase(username)='".strtolower($u)."' and password='".$p."' and banned='0'"));
        if(strtolower($l['username'])==strtolower($u) and $l['password']==$p && $p!="" && $u!=""){
        if (hasbalance($u))     {
    return true;
           }
                else return false;
  }else{
                return false;
        }
}?>

PHP:

 

solved
the problem was an extra md5