<?php
class Fixnum extends Object {
  private $value;
  function __construct($value){
    $this->value = $value;
  }
  function ==($test){
    if($this->value == $test)
      return true;
    else
      return false;
  }

}

$a = new Fixnum(5);
$a->==(5); #=> true
$a->==(6); #=> false

?>