gistfile1.txt

<?php

class foo {
    public function f1() {
        print("F1: ".get_class($this). "\n");
    }
    public function f2() {
        $this->f1();
    }
    public function f3() {
        print("F3: ".get_class($this). "\n");
    }
}


class bar extends foo {
    public function f1() {
        print("BF1: ".get_class($this). "\n");
        $this->f3();
        parent::f3();
        parent::f1();
    }
}

$b = new bar();
$b->f1();