Hopefully my last PHP script ever

Bench.class.php

/**
 * Useful to time buggy stupid ugly PHP crap
 *
 * $bench = new Bench;
 * $bench->output('Starting');
 * stupid_slow_function();
 * $bench->output('Done');
 *
 *
 * Can be called several times on an instance, inserts HTML comments like this:
 * <!-- BM: Done (2). T: 0.1 D 0.01 -->
 *
 * Output has counter, time since start and time since last output() call...
 *
 * PS: My condolences...
 */
<?php
class Bench {
  var $start = null;
  var $counter = null;
  var $last = null;

  function Bench() {
    $this->start = microtime(true);
    $this->counter = 0;
    $this->last = $this->start;
  }

  function output($message = '') {
    $now = microtime(true);
    $total = $now - $this->start;
    $diff = $now - $this->last;
    $this->counter++;

    echo "<!-- BM: $message ({$this->counter}). T: $total D: $diff -->\n";

    $this->last = $now;
  }
}
?>