Question

just trying to understand this code.

$db = new DB(DB_DRIVER, DB_HOSTNAME, DB_USERNAME, DB_PASSWORD, DB_DATABASE);
$query = $db->query(...);

foreach ($query->rows as $setting) {
...
}    

I haven’t seen this before: $query->rows
Does this mean that the for-each loop in accessing the variable rows within the function query?

Answer 1

It means $query is an Object, not a function. rows is a property of that object. A dumbed down query class could look like:

class Classname {
    public $rows;

    public function __construct()
    {
        $this->rows = 0;
    }
}

Where $db->query(...); returns an object of type Classname. Probably the real name is something like Query. Of course the class for your actual object is much more complex and rows is an array.