How to add a new method to a php object on the fly?

Question

How do I add a new method to an object "on the fly"?

$me= new stdClass; $me->doSomething=function ()  {     echo 'I\'ve done something';  }; $me->doSomething();  //Fatal error: Call to undefined method stdClass::doSomething() 

Answer 1

You can harness __call for this:

class Foo {     public function __call($method, $args)     {         if (isset($this->$method)) {             $func = $this->$method;             return call_user_func_array($func, $args);         }     } }  $foo = new Foo(); $foo->bar = function () { echo "Hello, this function is added at runtime"; }; $foo->bar();