metaprogramming php: using define_method with traits, closure and rebind

define_method.php

<?php



trait MethodsRuntime {
  
  public static function defineMethod($name,$fn) {
    self::$methods[$name]=$fn;
  }
  
  
   function __call($method, $arguments) {
   
    echo $method;
    
    $fn=self::$methods[$method]->bindTo($this);
    print_r($fn);
    return call_user_func_array($fn,$arguments);
  }
  
}


class A {
  static $methods=[];
  use MethodsRuntime; 
  
  function __construct() {
    $this->c=100;
  }
  
}

A::defineMethod("sum",function($a,$b) {
  return $a + $b + $this->c;
});

echo (new A())->sum(1,2);