$sql = 'CALL get_saldo_user('.$user_id.')'; 
	if ($res = mysql_query($sql)) {
		if ($row = mysql_fetch_array($res)) { 
....

	$sum_1=0;	$sum_2=0;
	$sql = 'CALL get_saldo_user('.$user_id.')'; 
	if ($res = mysql_query($sql)) {
		if ($row = mysql_fetch_array($res)) { 
			$sum_1=$sum_1+($row['dsum_zn']);
			$sum_1=$sum_1+($row['dsum_1']);
			$sum_2=$sum_2+($row['dsum_pay']);
  		}
	}

	$sql_menu = 'SELECT * FROM menu WHERE (top_menu = '.$menu_name.') and (id_bos=0) ORDER BY nom';
print('==='.$user_id.'--'.$sql_menu.'===<br>');//выводит
	if ($res_menu = mysql_query($sql_menu)) { 
print('==='.$user_id.'--'.$sql_menu.'===<br>');// не выводит