src/PicORM/Collection.php
public function offsetExists($offset)
    {
        if (!$this->isFetched) {
            $this->fetch();
        }

        return isset($this->models[$offset]);
    }
public function offsetExists($offset)
    {
        if (!$this->isFetched) {
            $this->fetch();
        }

        return isset($this->models[$offset]);
    }
Whether a offset exists

@param mixed $offset - Offset name to test

@return bool