session.php

arr.php

<?php

 /**
	* Bind a value on an array by path.
	*
	* @see Arr::path()
	* @param array   $array     Array to update
	* @param string  $path      Path
	* @param mixed   $value     Value to set
	* @param string  $delimiter Path delimiter
	*/
	public static function bind_path( & $array, $path, & $value, $delimiter = NULL)
	{
		if ( ! $delimiter)
		{
			// Use the default delimiter
			$delimiter = Arr::$delimiter;
		}

		// Split the keys by delimiter
		$keys = explode($delimiter, $path);

		// Set current $array to inner-most array path
		while (count($keys) > 1)
		{
			$key = array_shift($keys);

			if (ctype_digit($key))
			{
				// Make the key an integer
				$key = (int) $key;
			}

			if ( ! isset($array[$key]))
			{
				$array[$key] = array();
			}

			$array = & $array[$key];
		}

		// Set key on inner-most array
		$array[array_shift($keys)] = & $value;
	}
	
	
	
  /**
	* Delete a key on an array by path.
	*
	* @see Arr::path()
	* @param array   $array     Array to update
	* @param string  $path      Path
	* @param mixed   $value     Value to set
	* @param string  $delimiter Path delimiter
	*/
	public static function delete_path( & $array, $path, $delimiter = NULL)
	{
		if ( ! $delimiter)
		{
			// Use the default delimiter
			$delimiter = Arr::$delimiter;
		}

		// Split the keys by delimiter
		$keys = explode($delimiter, $path);

		// Set current $array to inner-most array path
		while (count($keys) > 1)
		{
			$key = array_shift($keys);

			if (ctype_digit($key))
			{
				// Make the key an integer
				$key = (int) $key;
			}

			if ( ! isset($array[$key]))
			{
				$array[$key] = array();
			}

			$array = & $array[$key];
		}

		// unset key
		unset($array[array_shift($keys)]);
	}
	

session.php

<?php

abstract class Session extends Kohana_Session {
	
	/**
	 * Get a variable from the session array, accepts paths
	 *
	 *     $foo = $session->get('foo');
	 *     $bar = $session->get('foo.bar');
	 *
	 * @param   string   variable name, or path
	 * @param   mixed    default value to return
	 * @return  mixed
	 */
	public function get($key, $default = NULL)
	{
		// if $key is a path
		if (strpos($key, '.') !== FALSE)
		{
			return Arr::path($this->_data, $key, $default, '.');	
		}
		else
		{
			// use parent get:
			return parent::get($key, $default);
		}
	}
	
	/**
	 * Get and delete a variable from the session array.
	 *
	 *     $bar = $session->get_once('bar');
	 *     $foo = $session->get_once('bar.foo');
	 *
	 * @param   string  variable name or path
	 * @param   mixed   default value to return
	 * @return  mixed	
	 * @uses 	Session::get, Session::delete
	 */
	public function get_once($key, $default = NULL)
	{
		// if $key is a path
		if (strpos($key, '.') !== FALSE)
		{
			$value = $this->get($key, $default);
			$this->delete($key);			
			return $value;	
		}
		else
		{
			// use parent get_once:
			return parent::get_once($key, $default);
		}
	}
	
	
	/**
	 * Set a variable in the session array.
	 *
	 *     $session->set('foo', 'bar');
	 *     $session->set('foo.bar', 'value');
	 *
	 * @param   string   variable name or path
	 * @param   mixed    value
	 * @return  $this
	 */
	public function set($key, $value)
	{
		// if $key is a path
		if (strpos($key, '.') !== FALSE)
		{
			Arr::set_path($this->_data, $key, $value, '.');
		}
		else
		{
			return parent::set($key, $value);
		}
	}
	
	
	/**
	 * Set a variable by reference.
	 *
	 *     $session->bind('foo', $foo);
	 *     $session->bind('foo.bar', $bar);
	 *
	 * @param   string  variable name or path
	 * @param   mixed   referenced value
	 * @return  $this
	 */
	public function bind($key, & $value)
	{
		// if $key is a path
		if (strpos($key, '.') !== FALSE)
		{
			Arr::bind_path($this->_data, $key, $value, '.');
		}
		else
		{
			$this->_data[$key] =& $value;
		}
		return $this;
	}
	
	
	/**
	 * Removes a variable in the session array.
	 *
	 *     $session->delete('foo');
	 *     $session->delete('foo.bar');
	 *
	 * @param   string  variable name or path
	 * @param   ...
	 * @return  $this
	 */
	public function delete($key)
	{
		$args = func_get_args();

		foreach ($args as $key)
		{
			if (strpos($key, '.') !== FALSE)
			{
				Arr::delete_path($this->_data, $key, '.');
			}
			else
			{
				unset($this->_data[$key]);
			}
		}

		return $this;
	}	
		

} // Session