How to ovearload functions in C++ and PHP

overload-functions.cpp

#include <iostream>
#include <string>

using namespace std;

class A {
public:
  void f(const string &arg1, const string &arg2) {
		cout << arg1 << ", " << arg2 << endl;
	}
};

class B : public A {
public:
	void f(const string &arg1) {
		A::f(arg1, "I'm B");
	}
};

int main() {
	A a;
	a.f("Hello", "World");

	B b;
	b.f("foo");
	
	return 0;
}

overload-functions.php

<?php

class A {
  public function f() {
		$args = func_get_args();
		$arg1 = $args[0];
		$arg2 = $args[1];

		echo "$arg1, $arg2\n";
	}
}


class B extends A {
	public function f() {
		$args = func_get_args();
		$arg1 = $args[0];
		
		parent::f($arg1, "I'm B");
	}
}


$a = new A();
$a->f("Hello", "World");

$b = new B();
$b->f("foo");