Question

I have some pretty simple code:

$result = mysql_query("
SELECT  max(id) as id, ip, max(entry), COUNT(ip) AS count 
FROM table_name
GROUP BY ip
ORDER BY max(id) asc
");

$i = 0;

$num_rows = mysql_num_rows($result);

echo $num_rows;


while($row = mysql_fetch_row($result)) {
    $id = $row['id'];
    $entry = $row['entry'];
    $ip = $row['ip'];
    $count = $row['count'];
    $i++;
?>



<tr width="100%" align="center">
    <td><?php echo $i; ?></td>
    <td><?php echo $id; ?></td>
    <td><?php echo $entry; ?></td>
    <td><?php echo $ip; ?></td>
    <td><?php echo $count; ?></td>
    <td>
    <form style="display:inline;" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
        <input type="hidden" value="<?php echo $ip; ?>" name="ip" />
        <input type="hidden" value="<?php echo $id; ?>" name="id" />
        <input type="submit" value="Ban IP" name="submit" />
    </form>
    </td>
</tr>

<?php
}

The problem is that when I run it, I get:

Notice: Undefined index: id
Notice: Undefined index: entry
Notice: Undefined index: ip
Notice: Undefined index: count

But as far as I can see, I have defined the indexes in the SQL statement, any help would be appreciated. It selects the data using the column names id, ip, entry and creates the index “count” for the count of ip’s, so why does it say that it hasn’t been defined?

Answer 1

To get the result row as an associative array you should use mysql_fetch_assoc instead of mysql_fetch_row.

Also you haven’t defined entrydespite your claim that you have. Change this:

SELECT max(id) as id, ip, max(entry), COUNT(ip) AS count 

To this:

SELECT max(id) as id, ip, max(entry) AS entry, COUNT(ip) AS count