Question

This is what I got, UPDATED

$avg_query = "SELECT AVG(rating) AS avg_rating 
                FROM kicks 
               WHERE userid = '$userid'";

$avg_result = mysqli_query($cxn, $avg_query) or die("Couldn't execute query.");                         
$row = mysqli_fetch_assoc($avg_result);
$average = $row['avg_rating'];

Every time I echo it out, it always returns array. Never used this function before, but i don’t understand why it would do that.

Answer 1

Shouldn’t you be assigning to $row here?

$row = mysqli_fetch_assoc($avg_result);
$average = $row['AVG(rating)'];

I’d also suggest using an alias when you are selecting the result of a function call:

$avg_query = "SELECT AVG(rating) AS avg_rating FROM kicks WHERE userid='$userid'"
...
$average = $row['avg_rating'];

If this still doesn’t give any result it is probably because:

• There are no rows in that table for that user.
• There is a row in that table where the rating is set to the value NULL.

In the second case you can fix it by filtering out those rows:

SELECT AVG(rating) AS avg_rating
FROM kicks
WHERE userid='$userid'
AND rating IS NOT NULL