Frank Mayer frankmayer

wrk -t4 -c400 -d10s http://127.0.0.1:1337/

PHP

Running 10s test @ http://127.0.0.1:1337/
  4 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
 Latency 7.02ms 6.94ms 82.86ms 85.27%

This post is also on my blog, since Gist doesn't support @ notifications.

Components are taking center stage in Ember 2.0. Here are some things you can do today to make the transition as smooth as possible:

Use Ember CLI
In general, replace views + controllers with components
Only use controllers at the top-level for receiving data from the route, and use Ember.Controller instead of Ember.ArrayController or Ember.ObjectController
Fetch data in your route, and set it as normal properties on your top-level controller. Export an Ember.Controller, otherwise a proxy will be generated. You can use Ember.RSVP.hash to simulate setting normal props on your controller.

Why objects (usually) use less memory than arrays in PHP

This is just a small post in response to [this tweet][tweet] by Julien Pauli (who by the way is the release manager for PHP 5.5). In the tweet he claims that objects use more memory than arrays in PHP. Even though it can be like that, it's not true in most cases. (Note: This only applies to PHP 5.4 or newer.)

The reason why it's easy to assume that objects are larger than arrays is because objects can be seen as an array of properties and a bit of additional information (like the class it belongs to). And as array + additional info > array it obviously follows that objects are larger. The thing is that in most cases PHP can optimize the array part of it away. So how does that work?

The key here is that objects usually have a predefined set of keys, whereas arrays don't:

	<?php

	class AcmeController implements ContainerAwareInterface
	{
	use ContainerAwareTrait;
	use RedirectTrait;

	public function indexAction()
	{
	return $this->redirect('some_route', [

	PHP 5.4:
	========

	$ php54 bench1.php
	0.36937880516052
	292432712

	$ php54 bench2.php
	0.47057294845581
	193929016

	<html>
	<body>
	<p>Here are Webber’s points:</p>
	<ul>
	<li>If a method can be static, declare it static. Speed improvement is by a factor of 4.</li>
	<li>echo is faster than print.(<em>* compare with list from phplens by John Lim</em>)</li>
	<li>Use echo’s multiple parameters instead of string concatenation.</li>
	<li>Set the maxvalue for your for-loops before and not in the loop.</li>
	<li>Unset your variables to free memory, especially large arrays.</li>
	<li>Avoid magic like __get, __set, __autoload</li>

	<?php // bundles/api_v1/controllers/example.php

	class Api_V1_Example_Controller extends Controller
	{
	public $restful = True;

	public function get_hello($name='World')
	{
	return "Hello, {$name}!";
	}

	<?php
	/**
	* @package Joomla.Plugin
	* @subpackage System.Overrides
	*
	* @copyright Copyright (C) 2012 Don Gilbert. All rights reserved.
	* @license GNU General Public License version 2 or later; see LICENSE
	*/
	define('OVERRIDES', dirname(__FILE__).'/overrides');