[PHP-DEV] memory usage ouchy

I just realized something that never occurred to me before - every
property is actually stored as a hash.

This test-script will demonstrate:

  <?php

  define('NUM_TESTS', 1000);

  $before = memory_get_usage(true);

  $test = array();

  class Foo
  {
    public $aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
    public $bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;
    public $cccccccccccccccccccccccccccccccccccccccccccccccccccc;
    public $dddddddddddddddddddddddddddddddddddddddddddddddddddd;
  }

  $bytes = 0;

  for ($i=0; $i<NUM_TESTS; $i++) {
    $foo = new Foo;

    $foo->aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 'a';
    $foo->bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb = 'b';
    $foo->cccccccccccccccccccccccccccccccccccccccccccccccccccc = 'c';
    $foo->dddddddddddddddddddddddddddddddddddddddddddddddddddd = 'd';