php dynamic method addition

dynamic-method.php

<?php

class Foo
{
    private $dynamicMethods = array();
    
	public function __call($name, $arguments=array())
    {
        if(isset($this->dynamicMethods[$name]) and is_callable($this->dynamicMethods[$name])){
            call_user_func_array($this->dynamicMethods[$name], $arguments);
        }
    }
    
    public function __set($name, $value)
    {
        $this->dynamicMethods[$name] = $value;
    }
}

$foo = new Foo;

$foo->bar = function(){ echo 'hello'; };

$foo->bar();