Question

hello i have some question.
how to make if staitment if is true, loop if staitment ,else return my staff

function checkSlot($member_id){
$i = 1;
 $query = mysql_query("SELECT * FROM `inventory` WHERE `member_id` = '".$member_id."'");
 $row = mysql_fetch_array($query);
  if($row['slot'.$i.''] > 0){
   $i++;
  }else{
   return true;
  }

Answer 1

You need a looop to check all the values.

function checkSlot($member_id){ 
    $query = mysql_query("SELECT * FROM `inventory` WHERE `member_id` = '".(int)$member_id."'"); 
    $row = mysql_fetch_array($query); 
    if ($row) {
        for($slotNumber = 1; $slotNumber<=10; $slotNumber++) {
            if($row['slot'.$slotNumber] == 0){ 
                return $slotNumber;
            }
        }
    }
    return 0;
}

Also, consider using PDO or mysqli_() functions (not mysql_()) as the mysql will be deprectiated. Get used to the new methods before you get used to the old and need to rewrite everything.

I’ve forced the $member_id to an integer to make it safe – otherwise use mysql_real_escape_string() as a bare minimum (or preferably PDO or mysqli_() functions as above)