gistfile1.php

<?php

abstract class stdConst
{
	private $c;

	public function __construct($c)
	{
		// requirement is for a class to be named <Something>Const
		// so static methods can be called on <Something>
		if(substr(get_called_class(), -5) != 'Const') {
			throw new RuntimeException('stdConst class name must end with Const keyword');
		}
		$this->c = $c;
	}

	public function __set($n, $v)
	{
		throw new RuntimeException(get_called_class() . ' can not be modified');
	}

	public function __get($n)
	{
		return $this->c->$n;
	}

	public function __isset($n)
	{
		return isset($this->c->$n);
	}

	public function __unset($n)
	{
		throw new RuntimeException(get_called_class() . ' can not be modified');
	}

	public function __call($n, $a)
	{
		return call_user_func_array(array($this->c, $n), $a);
	}

	public static function __callStatic($n, $a)
	{
		// get non-constant class name, and call a static method
		$class_name = substr(get_called_class(), 0, -5);
		return call_user_func_array(array($class_name, $n), $a);
	}

	public function __toString()
	{
		return $this->c->__toString();
	}
}

?>