This extension provide convinience way to work with Gas ORM instance and records

result.php

<?php namespace Gas\Extension;

use \Gas\Extension;

class Result implements Extension {

	/**
	 * Extension initialization method
	 * 
	 * @param  object
	 * @return void
	 */
	function __init($gas)
	{
		// Here, Gas will transport your instance
		$this->gas = $gas;

		return $this;
	}

	/**
	 * Return the Gas instance as array
	 *
	 * @return array
	 */
	public function as_array()
	{
		if (empty($this->gas)) return array();

		return ($this->gas instanceof \Gas\ORM) ? array($this->gas) : $this->gas;
	}

	/**
	 * Return the Gas instance record(s) to array result
	 *
	 * @return array
	 */
	public function to_array()
	{
		if (empty($this->gas)) return array();

		$records_array = array();

		if ($this->gas instanceof \Gas\ORM)
		{
			$records_array[] = $this->gas->record->get('data');
		}
		else
		{
			foreach ($this->gas as $gas) $records_array[] = $gas->record->get('data');
		}

		return $records_array;
	}

	/**
	 * Convert the Gas Instance records into string
	 *
	 * @return string
	 */
	public function __toString()
	{
		return '<pre>'.var_export($this->to_array(), TRUE).'</pre>';
	}

	/**
	 * Overiding method, triggered when try calling inaccesible method
	 *
	 * @param  string  Available method are : to_xml(), to_json(), to_data()
	 * @return mixed
	 */
	public function __call($method, $params)
	{
		if (preg_match('/^to_(xml|json|data)$/', $method, $m) && count($m) == 2)
		{
			$records_array = $this->to_array();

			switch ($m[1])
			{
				case 'data':
					$records_data = new \Gas\Data();
					$records_data->set('data', $records_array);
					break;

				case 'json':
					$records_data = json_encode($records_array);
					break;

				case 'xml':

					if (  ! function_exists('simplexml_load_file'))
					{
						throw new \RuntimeException('[to_xml]Simple XML must be installed');
					}

					$xml_template = "<?xml version='1.0' standalone='yes'?> <result> </result>";
					$result = new \SimpleXMLElement($xml_template);

					foreach ($records_array as $index => $record)
					{
						$$index = $result->addChild($index);

						foreach ($record as $key => $value)
						{
							$$index->addChild($key, $value);
						}
					}

					$records_data = $result->asXML();
					break;
			}

			return $records_data;
		}

		throw new \BadMethodCallException('['.$method.']Unknown method.');
	}
}