ModifiableAtRuntime.class.php

<?php

abstract class ModifiableAtRuntime
{
    protected $methodes;

    public function ajouteMethode($nom, Closure $closure) {
        $this->methodes[$nom] = $closure->bindTo($this, __CLASS__);
    }
    public function __call($methode, $args) {
        if (is_callable($this->methodes[$methode])) {
            return call_user_func_array($this->methodes[$methode], $args);
        }
    }
    public function __invoke($nom, $closure) {
        $this->ajouteMethode($nom, $closure);
    }
}