Question

I have the following function :

//Counts The Users In The Database Per Level And Stores The Results In An Array
public function countUsers() {
    $users = array();
    $length = array();
    for( $i = 0; $i >= 2; $i++){
        $sql   = "SELECT user_id FROM users WHERE user_level = '$i'";
        if ($stmt = $this->connect->prepare($sql)) {
            $stmt->bind_result($id);
            $stmt->execute();
            while ($row = $stmt->fetch()) {
                $stmt->bind_result($id);
                $users[] = $id;
            }
            $stmt->close();
            $length[] = sizeof($users);
        } else {
            $error              = true;
            $message['error']   = true;
            $message['message'] = CANNOT_PREPARE_DATABASE_CONNECTION_MESSAGE;
            return json_encode($message);
        }
    }   
    return $length;
}

This function is suppose to loop through the table and store the id’s in an array for each level and then get the sizeof each array per level. I mean, I have 10 user for level 0, 23 for level 1 and so on, and I need this info stored in an array.

What is wrong with my function ?

Answer 1

Can you have the SQL do more of the work for you?

SELECT   user_level,COUNT(user_id) usercount
FROM     users 
GROUP BY user_level;

That will give you all the counts for each user level.