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<?php

/**
 * Wrapper for getting fields from the request (GET, POST, ...)
 */
class Request
{

	/**
	 *
	 * @param string $key Key of field to get from $_GET
	 * @param string $default Value to return if $_GET does not contain $key
	 * @param string $type if the parameter exists, cast it to given type
	 * @return mixed Field from $_GET, or $default if not set
	 */
	public static function get($key, $default = false, $type = false)
	{
		if (!isset($_GET[$key])) return $default;
		if ($type !== false) settype($_GET[$key], $type);
		return $_GET[$key];
	}
	
	/**
	 * 
	 * @param string $key Key of field to get from $_POST
	 * @param string $default Value to return if $_POST does not contain $key
	 * @return mixed Field from $_POST, or $default if not set
	 */
	public static function post($key, $default = false, $type = false)
	{
		if (!isset($_POST[$key])) return $default;
		if ($type !== false) settype($_POST[$key], $type);
		return $_POST[$key];
	}
	
	/**
	 * 
	 * @param string $key Key of field to get from $_REQUEST
	 * @param string $default Value to return if $_REQUEST does not contain $key
	 * @return mixed Field from $_REQUEST, or $default if not set
	 */
	public static function any($key, $default = false, $type = false)
	{
		if (!isset($_REQUEST[$key])) return $default;
		if ($type !== false) settype($_REQUEST[$key], $type);
		return $_REQUEST[$key];
	}

	/**
	 * @return true iff the request is a GET request
	 */
	public static function isPost() {
		return $_SERVER['REQUEST_METHOD'] == 'POST';
	}

	/**
	 * @return true iff the request is a POST request
	 */
	public static function isGet() {
		return $_SERVER['REQUEST_METHOD'] == 'GET';
	}
}