setcookie - Cannot modify header information ...

[i_am_antipop]

ho provato così:

while($myRec=mysql_fetch_row($mysql_result))
    {
        list($user,$password)=$myRec;
        
         $conta++; 
                    
    }        
     
     echo $conta;
     if ($conta > 0){
         setcookie("miocookie","1");
        echo '<script language=JavaScript>location.href="pagina.php";</script>';
    } 

ma niente...