<?php

class MyClass {

private $a = 0;
private $b = 1;
private $c = 2;
private $d = 3;
private $e = 4;
public function getA() { return $this->a; }
public function getB() { return $this->b; }
public function getC() { return $this->c; }
public function getD() { return $this->d; }
public function getE() { return $this->e; }

public function setA($value) { $this->a = $value; }
public function setB($value) { $this->b = $value; }
public function setC($value) { $this->c = $value; }
public function setD($value) { $this->d = $value; }
public function setE($value) { $this->e = $value; }

}

$stuff = range('A', 'E');
$str0 = "set$stuff[3]";
$str1 = "get$stuff[2]";
$str2 = "get$stuff[3]";

$obj = new MyClass();
$obj->$str0( $obj->$str1() + 10 );
$v = $obj->$str2();

?>