majestic/model/SqlResultCollection.php

<?php

class SqlResultCollection extends ArrayIterator implements iSqlResultItems
{
    private $items;

    public function __construct($items)
    {
        $this->items = $items;
        foreach ($items as $item) {
            parent::append($item);
        }
    }

    /**
     * @return DbStatement[]
     */
    public function fetchAll()
    {
        return (array) $this;
    }

    /**
     * @param $field
     * @return mixed
     */
    public function fetchField($field)
    {
        $item = $this->offsetGet(0);
        return $item->{$field};
    }

    /**
     * @return mixed
     */
    public function fetch()
    {
        return $this->offsetGet(0);
    }
}