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    <?php

    namespace WPGMZA;

    class QueryFragment implements \ArrayAccess
    {
        private $nextIndex = 0;

        public function offsetExists($offset)
        {
            return property_exists($this, $offset);
        }

        public function offsetGet($offset)
        {
            return $this->{$offset};
        }

        public function offsetSet($offset, $value)
        {
            if(!$offset)
                $offset = $this->nextIndex++;

            $this->{$offset} = $value;
        }

        public function offsetUnset($offset)
        {
            unset($this->{$offset});
        }

        public function reset()
        {
            foreach($this as $key => $value)
                unset($this->{$key});
        }

        public function toArray()
        {
            $arr = (array)$this;

            array_shift($arr);

            return $arr;
        }
    }

    class_alias('WPGMZA\\QueryFragment', 'WPGMZA\\QueryFields');