Fixed inconsistent naming of example function

I noticed inconsistent naming of an example function. 

So I suggest a change from this:

```php
function getAllSomethings($db) {
    return $db->query('SELECT * FROM table');
}

foreach (getAllFoos() as $row) {
    echo "<li>".$row['field1']." - ".$row['field1']."</li>"; // BAD!!
}
```

...to this: 

```php
function getAllFoos($db) {
    return $db->query('SELECT * FROM table');
}

foreach (getAllFoos($db) as $row) {
    echo "<li>".$row['field1']." - ".$row['field1']."</li>"; // BAD!!
}
```