function iscorrect($email, $pass) {
    $sql = "select fld_eid, fld_password from tbl_emps where LOWER(fld_email)='".strtolower($email)."'";
    $result = mysql_query($sql);
    $isuser = mysql_num_rows($result);
    $arr = mysql_fetch_array($result);
    if (!$isuser) {return -1;}
    $eid = $arr[fld_eid];
    if ($pass == $arr[fld_password]) return $eid;
return 0;
}

if (!empty($user) && !empty($pass){
    echo "attempting login for $user";
    if (iscorrect($user,$pass)){
        echo "Login Succes";
    }else {
        echo "Invalid Details!";
    }
}